7.4 vortec fuel pressure test

  • 4 TBI 7. ECM MODES OF OPERATION . 1L Vortec 8100 Engine Specs The GM 8. If the fuel 5 7 Vortec Engine Studs - 7. View and Download Chevrolet 2004 Tahoe owner's manual online. 4 engine swap and I am having problems with the fuel system it appears. the fuel pressure regulator can be bad there are also issues with leaking fuel lines under the upper intake. You can test there for fuel There is an in line filter, on the frame rail some where between the tank and the engine. Its all about total fuel, air AND spark control. MASTER FUEL PRESSURE TEST KIT is rated 4. It is a component of the vehicle’s fuel system, and as it’s name implies, isThe Manifold Absolute Pressure (MAP) sensor is used by the Powertrain Control Module (PCM) for engine load input. As American automobiles grew in size and weight following the Second World War, the engines powering them had to keep pace. remove clamps, repressurize system. 4 in a 2000 dually. When I press on the accelerator the engine surges. It uses the same type injector LT1 and TPI engines. Vortec Engine Conversion. 4 captndavie; 21 videos; 1999 Suburban Fuel Pressure Regulator change 454 part 2 GMC Chevy Suburban 2500 454 Cu in 7. 4/10/2009 · I did a repower much like yours. I tuned the GM regulator that i have a vortec 454 7. rose to a max of 7. 7L (350) in my Toyota Landcruiser. Fuel Pressure Tester; Narrow Your Results Brand Great Neck (1) Innova (1) Get a fuel pressure test kit and check the fuel pump and fuel system on your ride today. To set the retard with the scan tool, the section you do that in is The test is: 12-15 psi when the key is turned on and the pump will shut off within 3-5 seconds and the fuel pressure should drop to 12-13 psi. 2001-2002 LS1 uses 3. I have 46lbs of fuel pressure at manifold/regulator. 143,000 miles. Whenever I start it I must "cycle" the key 2 or 3 times to prime the fuel system. The Chevrolet "Big Block" is a term for a series of large displacement V8 engines that have been developed and produced in the United States from the 1950s to the current day. The engine I used had a damaged fuel injection system so I bought a vortec 4 barrel marine intake manifold and reused my old carb and ignition system. 7 Chevy Vortec enginen, the instruction that came with the Distributor said that a code P1345 would be set, and that a Cam Crank relearn must be performed. I have read a little on how to test the FPR, which I will do tonight when I I am looking to find out what the fuel pressure specifications are for a Note: Check pressure with the key ON and the engine NOT runningHi, I am posting this thread for those of us with 7. GM lists no fuel specs with the engine running. Find compression low on one cylinder so pulled heads had them reworked. 7. This information is stored 4200 4. The Complete History of Chevy Big-Block Engines - Covers how to build 396 to 572 ci Chevy Big-Block Engines Step-by-StepIndy's #1 Ford dealer for over 20 years running. Do you have any signs of fuel in vacuum line to the regulator? Does the fuel pressure at idle seem steady? The subject is a 1996 Vortec 7. com FREE DELIVERY possible on eligible purchasesThe Chevrolet Silverado, and its mechanically identical cousin the GMC Sierra, are a series of full-size and heavy-duty pickup trucks manufactured by General Motors and introduced in 1998 as the successor to the long-running Chevrolet C/K line. 0L Engines Custom Throttle Body Modification Service. Bad PCV Valve Symptoms and How to Test the PCV Valve Yourself. View and Download Painless Performance VORTEC 60211 installation instructions manual online. If your vehicle has a pressure type 5. I too replaced a 1994 5. 7L V8 white smoke/steam - EricTheCarGuy - EricTheCarGuy- Stay Dirty! I am having a problem with my recently purchased 1998 Chevrolet K1500 Silverado. A bad MAP sensor will cause your vehicle to fail an emissions test. Primary to the process of rewiring the vehicle to run a more modern fuel injection system. VORTEC 60211 Automobile Parts pdf manual download. 1999 K2500 suburban fuel pressure problem. From the Editors of… Truck Trend 8. The Vortec 6000 or new VortecMax version is based on the Holden L76 engine, and features variable cam phasing, along with Active Fuel Management. The best test is to do a fuel pressure test on it. 2001 SleekCraft 30' Heritage SSB View and Download Painless Performance VORTEC 60211 installation instructions manual online. Search. Chevrolet had introduced its popular small block V8 in 1955, but needed something larger …Buy ACDelco MU1745 GM Original Equipment Fuel Pump and Level Sensor Module with Seal, Float, and Harness: Electric Fuel Pumps - Amazon. i am thinking about a fuel pump next. Also for: Suburban 2004. leak down test Fuel pressure regulator Weak fuel pump Fuel line integrity i. I dropped the tank and Where is the fuel pressure regulator on a 96 Chevy 4. Even after running a while, shut engine off and fuel pressure in system drops to 10-0psi in a matter of 3-4 minutes. 1998 Chevy Vortec 350 5. Carburetor Tuning Components. Re: Mercruiser 7. 4 L) the frontal offset crash test for poor use the 6. 4 454 starting/ fuel problems i put the pressure gauge on it last week with pump running its close to 60, turn pump off it drops very slowly holds at 55 or 60 for about 2 min a friend of mine that is going to school to be a gm tech and i replaced the fuel pressure reg last year. In essence the MAFS was replaced with a Manifold Air Pressure (MAP) Sensor. The fuel pressure regulator is an engine management component that is found in one form or another on virtually all internal combustion engines. Also for: Vortec …excellent product! I used this to mount my BBK fuel pressure gauge to my tuned port fuel injection rail on my 5. It too has a 7. Sign In OK - When two together sharing the head gasket are both low you test for pressure loss …Topic: 7. com forums. Here is a pretty cheap fuel Oct 22, 2017 Trying to figure out if injectors, fuel pressure regulator or fuel pump 1996 Chevy K2500 7. 3L Re: 1997 Chevy 454 Vortec: BUBBA THE BUS TECH: 12-23-10 : There is a fuel pressure check port on the fuel lines on top of the engine. 7L, 5. 3 Liter V6 Vortec LU3 Engine Sponsored Links The 4. 3 vortec? depends on the type of fuel injection on the motor on the CSEFIinjector assembly the regulator is located under the air IMPORTANT: Do not pressurize the boat’s fuel tank(s) in this test. Our Tilton-style starters are powered by a high-torque, 3. 4 MPI 454 EFI 454 MPI 8. ONLY test that you can do is to connect up Fuel Pressure Gauge, pressurize fuel system, shut it off and if the fuel pressure drops down in a few min, even 10 psi, get the FPR out. The Silverado name was taken from a trim level previously used on its predecessor, the Chevrolet C/K pickup truck from 1975 through 1998. The Only way to access it is to remove the upper aluminum intake plenum. i put in a new fuel pump and i am only getting 50 psi at the fuel rail. 3L Vortec engines was a Find CHEVROLET 7. A Girl Blowing Engine. Disconnect the fuel line from fuel tank(s). Some of the components shown above may look different from what will be included with your kit. 4 Route the connector for the Vehicle Speed Sensor (VSS) and connect it to the Vehicle Speed Sensor Check Fuel Pressure for correct value (Approximately 58-psi 5. wait 10 minutes. 4-liter V8, the 8. 7L Vortec, I got . TESTING Step 3: Make Sure Your New Fuel Pump Delivers Correct Pressure The Citroen Picasso 2 litre HDI requires a 3 bar pump to open the pressure sensor. 4L vortec. The location varies, depending on the engine type and the type of injection system used. Restricted fuel filters may show adequate pressure with a lack of flow. i only have 50psi idling,but when i am cranking it goes up to 60psi. Of course we also had to run each test using the same air/fuel, timing and temperatures. 0 out of 5 stars 260. 4 lb/hr at 58 psi fuel pressure. Always check to insure that you have the proper fuel pressure. 8L Liter V8 Vortec L20 Engine; E85 Flex-Fuel Capability: E85 is a clean-burning, domestically produced alternative fuel composed of 85 percent ethanol alcohol and 15 percent gasoline A bad fuel pressure regulator can be the reason for these problems. Visit the product page for more detailed specifications. 7L Vortec Fuel Pressure Bleeding Off. 3 Vortec Bogs, drives choppy, acceleration problems I just borrowed a fuel pressure test gauge and a ODBII scanner to help with further trouble shooting if 2001 Chevrolet Silverado 2500 HD Road Test Replacing the 7. The reason why is that the fuel system in all of the CPI and CSFI equipped Vortec engines are designed to maintain fuel pressure for a few minutes after engine shut off. 4 liter Water The Manifold Absolute Pressure (MAP) sensor is used by the Powertrain Control Module (PCM) for engine load input. 7 lb/hr at 58 psi(4BAR) fuel pressure 1999-00 LS1 uses 3. at the 6539A Fuel Pressure Adapter 6539 This 5/16" adapter is used with C-4799 gauge & hose assembly for fuel pressure diagnostics on vehicles equipped with metal fuel rails. 3 V6 Vortec is doing the same thing. Hey everyone, I have a 1996 Chevy C1500 with a 5. 3-liter engine called the 4300. So recently it quit on me and will idle only after cranking it a long time. shut it down and walk awy till morning. 0 engines from Express Vans had a much smaller mass airflow sensor. Why?. Fuel Pressure Specifications in a 1998 Chevrolet Silverado by Leonardo R. If fuel pressure is less than the KOEO specification, you need to test the fuel pump and its voltage supply circuit. 4 liter in front of the upper intake manifold. 4 3 Liter V6 Vortec Engine. 2, 502 or 8. 4 454 starting/ fuel problems i put the pressure gauge on it last week with pump running its close to 60, turn pump off it drops very slowly holds at 55 or 60 for about 2 min 98 chevy 2500 7. In Tank EFI Fuel Pump Conversion . the pressure drops off pretty quick after i shut it off also. 3 TKS - 262 cid The P0171 code could also be caused may be caused by one or more of the following: debris on MAF sensor causing an incorrect reading, improper oil level, low or high fuel pressure or Engine Control Temperature (ECT) Sensor reading inaccurate. How to Use and Interpret a Vacuum Gauge Few tools or test devices are more useful and versatile than a vacuum gauge, yet very few hobbyists own one. 4 vortec fuel pressure test check fuel pressure and so on. A spring inside the pressure regulator pushes against the diaphragm and helps regulate the pressure inside it. When replacing the distributor on the 5. vortec 7 4 fuel injection 7. Fuel Trim (Fuel Adaption) Diagnostics Incorrect Fuel Pressure limits which are the calibrated fail thresholds for the test. 4 Vortec Rough Idle. 2004 Tahoe Automobile pdf manual download. com/youtube?q=7. Recommended Posts. GM VORTEC 7. Compare. Although the pressure sensor is often the cause of a P0452 or P0453 there are other possible causes. Using a bidirectional scan tool. 4 Premium Long Block 1996-2000 Vortec. Get your bad fuel pressure regulator checked if you notice any of the following. '99 7. 7L Vortec V8. i have a vortec 454 7. Dead head pressure from the fuel pump should be 70 to 80 psi or higher, and the pump should be capable of delivering a quart of fuel in 30 seconds. I did find another issue during this test, though. i squeezed the return line and got up to 70 psi. Crank Compression Test - Test Pressure A Crate Short-Block is an Easy Way to Get to a Power-Adder–Friendly LS Engine How to Assemble a Big-Block Chevy Short-Block Part 1 Below are a few pictures of a fuel pressure gauge installed onto the fuel rail of a 1997 Chevy truck 1500 with a 5. The Vortec fuel system does have a built-in regulator on the fuel rail as in many earlier GM fuel injection systems. 4 fuel pressure regulator. i rechecked my fuel pressure today. If the pressure is good then the fuel pump is as well. I have powered the test lead and still fuel pump did not run. 3 VORTEC MPI owner's manual online. $33. 3 VORTEC MPI Engine pdf manual download. 7L Vortec 350 V8 engine. 7 lb/hr All the Vettes in 01-02 uses the larger LS6 injectors which are 3. 7L Vortec Truck won't start, Replaced Fuel Pump, Filter & Has Spark. Original equipment fuel pressure regulators are pre-set to control fuel at pressure specified for a standard engine. The PCM uses this input, as well as others, to calculate the correct amount of fuel to inject into the cylinders. I'm actually looking for an LY6 (Gen IV Vortec 6. 96 Dolphin 7. The fuel volume test is very handy in determining fuel filter restriction. The Jeep has The vortec 454 does not have the same injectors as the small block vortec. 78 ACDelco 217-3029 GM Original Equipment Fuel Injector Kit with Bracket Check out these First Generation 1996-1998 GM Vortec fuel-injected 350 Engine Power Upgrades, including exhaust, throttle body, and more, at Sport Truck Magazine. Another fuel system was introduced in 1992 called Central Port Injection (CPI) and appeared first on the 4. 4 how do you test fuel injectors you will need a fuel pressure gage as i have an 88 2500 7. Is Hydrogen on Demand Dangerous Is An Often Asked Hydrogen Gas Question? With Hydrogen On Demand we are using the hydrogen immediately as it is being produced. I'll be organizing this and helping you find everything about the MEFI-3 controller (will expand this as resources are available). 672 g/sec or 29. Peak Pump pressure on the TBI motors is about 15-16 psi, and regulated by a regulator in the back of the TBI, There are way to change the regulator pressure but would have to look up how to do it, but the regulator is not your Vortec 4. It seems to me its not getting enough fuel and when it starts to surge I lose oil pressure. It is designed for easy installation, even if you have no electrical experience. 7 4 barrel with a 2006 Mercruiser 350 magnum that did have fuel injection. Excessive fuel consumption. 3L & 6. Edelbrock is the most respected name in performance. i squeezed the return line and got Jul 21, 2012 Compression check on cylinders is fine. if not the fuel is going somewhere. to your it’s important that you run a diagnostic test to have a The 1997 Chevrolet Silverado has 4 NHTSA complaints for the fuel system, gasoline:fuel injection system:injectors at 6,250 miles average. Put everything back together still rough idle and P0300 and P0102 codes. Get an alert with the newest ads for "7. 4 is like the 5. 4 FUEL INJECTION. Refer to the Fuel Pump removal and installation procedure for servicing. Sign In OK - When two together sharing the head gasket are both low you test for pressure loss between them but now if opposite that shouldn't be the case. The complete TBI system comes with all components needed for a closed loop system except for air cleaner, throttle cable/linkage, and fuel lines. back to the tank or in the engine. 7 Fuel Pumps we have available are mechanical and electrical. turn key on, pressurise system. for your set up then test with good pressure testerThe fuel pressure regulator is an engine management component that is found in one form or another on virtually all internal combustion engines. vehicle tailpipe emissions and fuel economy. The fuel pressure regulator is located on the back of the intake manifold, more towards the driver's side, next to the distributer. Im gonna do a pressure test this weekend and truck has 179k miles, I have owned it for 3 yrs and never replaced anything fuel related other than fuel filter cameo89 , Dec 19, 2011 Notice the external fuel rails, external injectors, and identical throttle body position to the stock L31/31 Vortec 350/305. I just did a vortec 7. You can get one for about 30 dollars. 5. I'm pretty sure the 7. and jumpered the wires on the oil pressure sender in an effort to Diagnosing Misfires air leaks; or low fuel pressure because of a weak pump, restricted filter or leaky pressure regulator. 95 Answers. I coulda swore that I made this video already but here we are lol. Higher pressure than 15 psi indicates I have a 1998 5. The fuel system in your 4. 4, 454, 8. it could be the anti theft system locking the injectors out. run the truck with a fuel pressure gauge on it. Fuel up to spider with 63lbs of pressure, got spark Suburban fuel pump replacement If you do not have any fuel pressure in the fuel line after you just turn the key ON it simply means that either your pump is not chevy silverado fuel pressure regulator Diagram Learn to test and analyze automotive fuel injector circuits from a wiring diagram sensors 96 00 Vortec 7 4 This is the ideal replacement inboard engine for any make of 7. 4 vortec" in Ontario. 7L Vortec, I got the truck recently and was told it just needed a Fuel pump, I replaced the Fuel pump, and the Filter, also the pump turns on and there 1998 LS1 uses 3. They really wake up and make a ton of power with a few mods. her "1997 GMC jimmy Fuel Pressure Regulators. hi everyone. This is testing the fuel pressure in the C/K pickups. 4 tunes from the repository and 7. clamp supply line and return line at tank. I also tried a suggestion to test the regualtor by pinching the return line and checking to see if pressure held. GM VORTEC Drive by WireElectronic Fuel Injection Wiring Harness HAR-1014 PERFORMANCE SYSTEMS INTEGRATION 170 Oberlin Ave www. re: 2000 gmc 7. 3L Vortec Visit Us On Social Tire Pressure; Airbag A bad fuel pressure regulator can lead to a build-up of excessive gasoline that can lead . 4 with 240K hard miles on it, transplanted into a 1994 3500HD. 4L Vortecs who The culprit in my instance was a faulty fuel pressure dampener, AKA fuel May 10, 2011 Thread: k3500 silverado vortec 454 possible fuel pressure regulator? . 3/6. The Vortec big-block was gifted with a sequential port fuel-injection system that provided more power than its predecessor (throttle-body injection), but it still wasn't even close to the numbers Do a pressure leak down test with Fuel pressure gauge. 4 vortec? The fuel pressure regulator is located on the back of the intake manifold, more towards the driver's side, next to the distributer. The high pressure fuel pump had to be ordered from one Generic TBI Fuel Injection Block Diagram & Acronyms Individual Components and Their pressure sensors as opposed to absolute pressure sensors. 4 vortec fuel pressure testApr 3, 2014 I coulda swore that I made this video already but here we are lol. Select MerCruiser Test Model HP Fuel consumption WOT; MerCruiser 3. Starting at $69. Please contact us for more information. Had this issue on a 2000 4. 4 that i want to put in a 98 3500 that had a vortec Recently installed a 7. Written by Gregs78cam. 7 Vortec Fuel Pressure Regulator discussion at the Automotive. 4+vortec+fuel+pressure+test&v=6TP49B2oWMo Oct 16, 2011 Showing fuel pressure static and running on a 1999 Vortec 5. 21/29 City/Highway MPG For more information contact the Internet Managers at 1 (800)514-0263 to set up your VIP Test Drive. cargurus. this is the 3rd vortec 454 i have had,but the first starting problem. This is after changing fuel pump and filter. Here is a pretty cheap fuel  Vortec Fuel pressure test - YouTube www. 0 MPI/TKS - 181 cid. An ACDelco GM Original Equipment Electric Fuel Pump is a GM-recommended replacement for your vehicle’s original components. With ignition "ON," engine "OFF" and fuel pump running, pressure should be 415-455 kPa (60-66 psi). The most important part of any starter is its motor. 4 Vortec No Fuel Pressure Sign in to follow this . Fuel System Checks Fuel Pressure is critical to the operation of a fuel injection system. If the 7. S. clogged or damaged fuel filter Leaking injector(s). I checked the fuel pressure at the rail and it's right at 50psi running. Most OE systems maintain a fuel pressure of between 36 and 43. Check engine light keeps coming on. View and Download Marine Power 4. I changed all the sensors on the top of motor as well. Updated on July 8, 2017. 3 TKS - 262 cid 96 Chevy C1500 5 How to test fuel pressure 5. 0 changes over the years: The fuel pressure regulator is on the fuel rail, and has a vacuum line to the intake manifold. Will not starts turns over but will not start gets fuel sorry I did the test and I'm getting good fire . Mercruiser Fuel Pressure Regulators. 0 L) V8 Vortec 7400 (7. 3L Vortec engines was a Harris Performance, INC. 75:1 gear reduction ratio, it provides a HUGE starting-power increase over stock. 4 FUEL INJECTION. 7 L Vortec Truck won't start, Replaced Fuel Pump www. Vortec - Includes High Flow Throttle Blades: 62-4. 7 vortec. Fuel Pump & Pressure Regulator Fittings. For 1999-2006 Chevrolet Silverado 1500 Fuel Pressure Regulator 85686JF 2002 2001 ACDelco 19210686 Fuel Pressure Regulator 96-04 GM Trucks Vortec 5. 4 Vortec No Fuel Pressure. CONTACT US. The test is: 12-15 psi when the key is turned on and the pump will shut off within 3-5 seconds and the fuel pressure should drop to 12-13 psi. for your set up then test with good pressure tester 1997 5. Compare easy test. Stopping the flow in the return line momentarily will test to see if a low pressure problem is caused by the regulator. Fuel Pump Circuit: The fuel pump is a turbine type (1994), low pressure electric pump, mounted in the fuel tank. 3L (W) L35 Engine. The regulator is inside the TBI unit. Fuel injection test set; Releasing high fuel pressure in the lines is an important first step in the injector removal process 7. Is the pump leaking off. This improves air/fuel Building a budget V8 swap can be easy if you know how to identify your Vortec engine, for the LM7, LR4, L59, LQ9, and other GM GEN III Vortec engines. Also, a 0 reading on the pressure gauge shortly after shutting the engine off is another indication. 4L Vortec hard start, stumble - A TEST. The Only way to access it is to remove the … upper aluminum intake plenum. Car Problems Let's test drive a new truck and show me it is normal. Your reading was done at idle. ask. 7 Originally Posted by C/K Man Code P1345 means there is a problem with the correlation between the cam position sensor and the crank position sensor. Item Information engine test stand for proper oil pressure and compression and come complete with the Well, I took my truck to the Chevy dealer today for a diagnosis. [Archive] Discuss the GM 6. I recommend upgrading to the 1996 Vortec 155lph fuel pump which can support up to 450hp and plugs right into a factory TBI sending unit. 7L Vortec engine in my old restored pickup. 04. Grabkowski The 1998 Silverado, which is officially known as the C/K1500, is a full-size truck sold by General Motors through the Chevrolet brand. I'm working on a 97 Silverado 5. 0 w/ L92/LS3 heads) to replace the 4. GM 4. the engine would not start but you can still test the pump. If your fuel pressure regulator is going bad, your car could display several different symptoms. General Motors has become aware of several companies that claim to be able to Chevy Blazer Fuel Pump and Pressure Regulator Problems. A vacuum gauge can tell as much about the internal and external workings of an engine as the combination of a voltmeter, compression gauge, stethoscope and timing light. First find exact fuel pressure spec. test resistance and it falls within factory spec I would also guess the fuel pressure regulator or injectors because of your hard Fuel Pressure 98 Vortec 454. 2 MPI 502 EFI 502 MPI Horn Output Possible Cause Corrective Action Engine Usage Available For Consumer Key on, beep for 2 seconds, then off Normal test horn No Action Required No action required Solid Horn Oil pressure If possible, stop engine and key off to check related items. Detonation occurs because fuel is subjected to either too much pressure, too much heat or both. Showing fuel pressure static and running on a 1999 Vortec 5. 0 vortecs, only downside is the fuel mileage when its in a 2500 chassis. Hook -up fuel pressure gauge to test port at fuel rail-key on engine off-should read 55-62 psi Re: hard start 98 chevy vortec 454 December 11th, 2011, 12:57 AM leakie injector would do it. Kijiji Alerts. 3 Liter Vortec V8 Join Date Feb 2003 Location Way Out West Posts 1,260 Thanks 2 Thanked 97 Times in 67 Posts Silverado finishes third in C&D comparison test 12-15-2018 11:34 PM » Auto Fuel Pressure Problems therefore, would be to check fuel pressure. Possible reduction of power from I replaced both the injectors and fuel pressure regulator on my 1996 7. . We offer adjustable fuel pressure regulators that The growling noise started after replacing the fuel pressure regulator. Carburetor Adapters; EngineType: V8 ( 7. 96 Chevy C1500 5. 3L V8 SFI VVT Flex Fuel Call us today for your VIP test Are all Fuel Injectors Created Equal? by an OEM test lab, we can plot the fuel mass delivered why the fuel pressure can’t be raised to increase injector Connect and Cruise - Fuel injected with Automatic 7. How to test fuel pressure 5. If either value is within the fail . Check the filler neck and fuel vapor pressure sensor. They work fine for a grocery getter but are grossly inadequate for a modified engine with a high-flow fuel pump and injectors. I noticed that the fuel I drained into the bucket had an orange tint. 7 Fuel Pumps. 1lb/hr??? I would download some stock 7. 1 ©2003-2006 InteractivePHP, Inc. The fuel pump produces much more than just 50 PSI of course. Hi, The culprit in my instance was a faulty fuel pressure dampener, AKA fuel pump pulsator. Remanufactured-Engines. 3 IIRC fuel pressure should be around 58psi. 4 Liter Chevy Engine. I wanted to replace the fuel pressure regulator as I have told they all go bad. 4 running like 7 cyl. 1999- 2013 gm truck fuel pressure test // test port location - YouTube www. 1L used a return line to manage fuel pressure by bleeding off excess fuel at the fuel rail and returning the excess to the fuel tank. Get Yours Today! We know our parts and products. Fuel Pump, Electric, High-Pressure, In-Tank, for EDL-3501, 3502 EFI Systems, Chevy, GMC, SUV, Pickup, Each7/23/2010 · Re: 97 silverado Vortec 7. The LS1 Camaro/Trans am had a 3 wire sensor, with an external separate air temp sensor. Dan Ferrell. When I push the clutch in to stop it Location: Main Index » Forum Index » Trucks-Vans-SUV » 88-98 Fullsize Trucks, Vans, Suburbans, Blazers, Tahoes » '96 C3500 Vortec 7. 7L Vortec engine needs at least 50 PSI of fuel pressure to start. 7L Vortec Silverado to the MPFI and giving some input if anyone else was considering The fuel filter is located under the fuel pump. ( 7. If we don't have what you're looking for we can find it. 1 GROUNDING THE VEHICLE OTC 5630 Fuel Pressure Test Kit 4. 4/4/2012 · Mercruiser MEFI-3 ECM Delphi 16237009 This topic is under development and really only scratching the tip of the iceberg. TEST 1: Fuel Pressure Leak Down Test The very first test (and the most important) to do is a fuel pressure leak down test. Some background first. 3V: 96'-2001 Trucks 4. Remove a spark plug and examine the end of it. Throttle/Carburetor Linkage, Choke Kits & Components. 4 Vortec Help Discussion in ' Read many places saying check fuel pressure, found that it dropped to around 40. The stock l31 intake has many hills and valleys, the Marine intake is flat. 4 L / 454 ) 1976 CHEVROLET MALIBU vortec fuel pump, 18-21 psi spring, chipped, GM performance Intake to run TBI GM 4. More "How To Test Fuel Pressure 4. but before i go and dump '99 7. I at first thought it was my clutch going out but now don't think that is the problem. This article lists and explains the most common of these. 1 makes 340 horsepower at 4,200 rpm and 455 foot-pounds of torque at 3,200 rpm. 0L & 8. 4 MPI s/n = 0L068756-gctid734851 oil pressure exists. Here is a pretty cheap fuel pressure tester that I found on amazon: If the test is done with a method that allows the fuel filter to be in place, a dirty filter can also cause low pressure. Re: Fuel Pressure 97 Chevy Truck 5. 7 V8. Your 11/2/2007 · the intake gasket problem is common on all vortec engines. well I have 60 pounds of fuel pressure and fireing right I have changed everything on it cranck sensor Getting a consistent reading may take several tests. Often systems will leak air but not fuel. chevy 7. Quotes by Phone Only. 4L 454 in my 3500 chevy dually. Any reading below 22 psi (152 kPa) at 4000 rpm and above would indicate this check valve problem. For example, if you have an adjustable regulator and you set it to 55 psi, you will get 55 psi at zero manifold pressure, and 65 psi at 10 psi of boost. 7. 7 liter engine. By mjlayton, January 7, 2016 in Engines. To check it you do a fuel pressure test(key on, engine Apr 3, 2014 I coulda swore that I made this video already but here we are lol. Jim Grant's Tech Tips ‘97 Chevy Astro, No Injector Pulse. ~ The fuel pump you are using MUST maintain a constant pressure of 55-62 P. 4 running like 7 cyl. Fuel is pumped at a positive pressure ( 83kpa or 12 psi) from the through the in line filter to the pressure regulator in the TBI unit. <c>Output is a bit Re: Compression test on 7. We also  Throttle body injection tbi fuel pressure test with no test port - YouTube www. The fuel pump works for about 2-3 seconds when i turn on the key and it works when i crank the engine but i do not have anything close to 50 lbs of pressure Did you do a fuel pressure test? Should have at least 60 to 65psi. 7 V8. Oil pressure switch location on Mercruiser v8 7. 3L V6 Vortec LU3 is an engine produced by General Motors for use in full-size light-duty pickup truck and vans. 4-liter engine is known as the General Motors 7400, which was a Vortec-designated engine built from 1996 until 2001 as a truck engine. The check ball vales wear and go bad and leak fuel into the cylinders. 1 Liter V8 Goodwrench Engines Product Accessories for Manifold Vortec For Tbi 12496821. 1/12/2016 · 96 Dolphin 7. If you do replace the pump use a CARTER pump and change the pump harness. No scan tool is required or any other expensive testing equipment. Misfire Under Light Load 2000 - 2500 RPM| 1996 Chevrolet Blazer | 4. This V8 engine replaced the 7. Pressurize the fuel system that goes to the en gine to 8 psi (55 kPa) with a hand pump to see if it holds this pressure. Also when we were down there we replaced the fuel  Fuel psi less than 50 psi = no start (GM CPI Vortec) - YouTube www. 6. 328 g/sec or 26. 4+vortec+fuel+pressure+test&v=yjQY613sql4 Jan 3, 2013 This video covers the basics of fuel pump pressure, current, power and ground testing that can be applied to ANY electric fuel pump. 3 vortec blazer. Restricting the fuel return line allows the fuel pressure to build above regulated pressure. The fuel pressure regulator is a part of the fuel sender assembly in the fuel tank. How To Fuel On engines that use a manifold absolute pressure (MAP) sensor to determine airflow, a vacuum leak does not affect fuel trim because the extra air (pressure) in the manifold is still measured by the MAP sensor. " I declined having them do the work as I can do either one myself. 4L/454 Fuel Pumps, Electric In-Tank and get Free Shipping on Orders Over $99 at Summit Racing! JavaScript Disabled. 4 Vortec (fuel) Issue: NO spark at all on #5 with a P0305 Code I changed the distributor cap, rotor, wires and coil Distributor was replaced over 30K miles ago, AC Delco replacement, and there is currently no slack in the shaft. 7 Vortec Fuel Pressure Test. 4+vortec+fuel+pressure+test&v=zfOuUzcCo6I Mar 3, 2011 here is a test of the pressure on my 1999 gmc K2500 suburban. Edelbrock 3581 - Edelbrock High-Pressure Fuel Pump Kits. Code says 02 sensors which I have replaced all four of them two times. Sign Up. This is shut down the fuel pump if the engine is not running Before shipping out each Michigan Motorz remanufactured engine, we pressure check, spin test and compression test the engine to ensure 100% quality and reliability. 135 hp: 10. 4 Vortec - 1998 I have a old fuel pressure test kit and one of the adapters allowed me to tap into I am looking to find out what the fuel pressure specifications are for a Note: Check pressure with the key ON and the engine NOT running Hi, I am posting this thread for those of us with 7. They would not do it so , again, we spent the time and $ to do it ourselves. 4, 8. When you put the oil in and redo the compression test, if the pressure comes up, rings are bad. The manifold looks stained/wet around the outer edge where the top bolts to the intake. The best boat forum for marine electrics and marine electronics for technical advice and answers. It takes 4 times the fuel pressure to double fuel flow. I have read a little on how to test the FPR, which I will do tonight when I i have a vortec 454 7. 4L/454 Fuel Pumps, Electric In-Tank and get Free Shipping on Orders Over $99 at Summit Racing! Edelbrock High-Pressure Fuel Pump Kits. 1L Vortec engine was the last of the GM series of big block engines. 4 low fuel pressure FusionBB™ Version 2. Fuel pressure can be raised to increase the rate of fuel flow but this should not exceed 60 psi in most cases. 4 3 vortec camshaft spec card. Most vehicles have a port to attach a fuel pressure gauge to the line for testing; manufacturers vary, however, in the particular test they recommend for specific vehicles. 0L, 4. No fuel pressure means we need additional 3 квіт. i probably should replace the injectors any ways because they have 190,000+ on them. Equip cars, trucks & SUVs with Fuel Pressure Regulator and Control from AutoZone. if pressure bleeds off, its in the injector unit, or the regulator. How To Replace Fuel Injectors. 4 that i want to put in a 98 3500 that had a vortec The pressure test port should be located at the front of the engine on this vehicle with the 7. 4 liter engine 6-Speed Automatic Vortec 5. 4. This harness is designed to be a complete wiring system for the fuel injection system on General Motors 1996-99 Vortec injected 4. 4+vortec+fuel+pressure+test&v=2M5rtOcY-Ow Oct 12, 2016 On my 1995 GMC Suburban I've been having shuddering and stalling issues when I'm going in reverse doing a hard stop or idling in the  1999 K2500 suburban fuel pressure problem - YouTube www. so far can't figure it out Hmm by chance done a fuel volume test? Just because pressure is good does not mean it has good volume If one of the engines listed has a loss of power above 4000 rpm, use a fuel pressure gauge to measure the fuel pump pressure. bryan evans . Readings above or below the specified range shows a problem. Yamaha Sterndrive Fuel Pump Gaskets. Get an alert with the newest ads for It's got the 5. Fuel Pressure Fuel Pressure Problems you need to test the fuel pump and its voltage supply circuit. 7L Vortec CSFI to MPFI spider swap just did the spider upgrade on my '97 5. 454 7. This is after Oct 21, 2017 Fuel pressure test when cold, turn key on and spikes to almost 60psi, then quickly drops to You are working on the 7. You can verify fuel pressure by doing a pressure test. 0 HP motor. the gauge should be still the same psi. If it doesn't come up it's probably valves. 0L Vortec 97 4. 4 vortec problems oil leak 1997 astro 4. Improper spring pressure means valve float and lost horsepower. With the battery voltage applied to the fuel pump test terminal, the pressure should rise above 455 kPa (66 psi), as the valve in the return line is partially closed. Crank Compression Test - Test Pressure A Crate Short-Block is an Easy Way to Get to a Power-Adder–Friendly LS Engine How to Assemble a Big-Block Chevy Short-Block Part 1 Safely tests vehicle fuel pressure systems on GM TBI vehicles not equipped with a Schrader or fuel access valve test port on the fuel line. Q: We have a ‘97 Chevy Astro van in the shop that wouldn’t start. 7 Vortec that runs great for the first 10 min or so, then stumbles while in overdrive. 0-psi. Also after fuel The 7. 26. 3 vortec v6 fuel pressure problem. It is located under the upper intake plem. 201114 чер. 4+vortec+fuel+pressure+test&v=qHcOS7FY148 Mar 18, 2017 We tested to the fuel pressure on a Chevy TBI. 7L Vortec, I got Did you check wire harness goig around passenger side of block. 3L, 5. 5 psi over the intake manifold pressure. clamp only return. If this does not solve it then connecting a fuel pressure gauge to the port in the rear of the TBI to test Pressure. just in front of where suburban 454 vortec 7400 7. Fuel pressure specifications 1. If it is a Vortec motor they are bad about the fuel pressure regulator failing. Not a 1998. 4L Vortec as the high power option for the vehicles in which it was offered. wait ten minutes. 3L V8 SFI Flex Fuel Visit Franklin Nissan Vortec 5. Spark knock (detonation) is an erratic form of combustion that occurs when multiple flame fronts occur simultaneously inside a combustion chamber. lelias Posts: 1. 201716 жов. As soon as I step on the gas it quits. This is a 1996 7. The Vortec 7400 L29 7. When they fail they will leak fuel into the intake and cause the engine to "flood" so to speak. 4 L (454 cu in) V8 was a truck version of the Chevrolet Big-Block engine. 3 vortec See our Fuel Pump Electric Mechanical Inline Quiet Flo Universal. You can raise the pressure with an ADJUSTABLE fuel pressure regulator, which increases the pressure all the time and matches boost pressure with a 1:1 increase in fuel pressure. I have a 96 chevrolet C3500 with the 7. Symptoms of a bad or failing MAP sensor include: 1. com Marine Auto Truck RV-Motorhome Industrial Equipment P erformance Upgrades Our premium top quality longblock engines are fully remanufactured to the highest industry standards, and we pride ourselves on building engines using the latest in upgrades and improvements. 8L, 5. The Jeep has Your reading was done at idle. With a 3. This system uses an ECM GM Part #1227727 for the Corvette. I asked if they were sure it wasn't the fuel pump and they said, and I quote, "Well, we would have to start with the fuel pressure regulator and go from there. Im having an issue with the oil pressure gauge oil presure issue 98 vortec 454? Page 1 of 2 1 2 Last. after we did and realized that it didnt fix the issue he did some pressure test and started to think that it is the fuel injectors. (pounds per square inch). Diesel Place : Chevrolet and GMC Diesel Truck Forums > Other Vehicles > GM Gassers change during “goose” test). 3 Vortec" links MARINE POWER 4. 4 Vortec No Fuel Pressure Sign in to follow this . I have a 1997 GMC Sierra K1500 with a 5. Adding a performance cam to your Vortec 350 is always a great idea. Most Michigan Motorz remanufactured engines come with the valve covers, marine oil pan, circulation pump and timing cover installed, unless otherwise specified. Chevy Express/GMC Savana Starting/Stalling Problems 4. Vortec 5. the in-line fuel filter and was just an extra connection with a small orifice in it, and a seperate, small line Finding the fuel-pressure test-port Fortunately, GM provides a standard test port on later models. We got spark, fuel pressure was good, but the scan tool was showing no injector pulse during cranking. 201615 Aug 2012 General Tech - Fuel Pressure Specifications for 454 SPFI - I am looking I removed the fuel filter and connected the pressure gauge to test the 10 May 2011 Thread: k3500 silverado vortec 454 possible fuel pressure regulator? . . 1 engines that power twin-engine inboard boats. Details of all Gasoline Fuel System/Fuel Pump problems of GMC Sierra. Most electric fuel pumps use a turbine or gerotor design and are positive displacement pumps. They are buried under the plenum. Followers 0. I also did get a check engine light test done when the growling noise started and it was telling me that I was getting a lean mixture which was causing low RPMs. 5 GPH: MerCruiser 4. It has a stainless lock wire holding the pressure screw from loosening. 8 / 5. 1L gas engines & associated components. 0L L96 flex fuel capable Vortec engine combined with the 6l90e install automotive fuel injection harness on the market. It's had a whole list of problems that previously were just annoying, but recently got bad enough to cause major grief. Tests: Fuel pump check valve i. In the specific case of the GM Vortec engine family, GM has made several changes to the pistons and ring packages since the engines were new--and they still are. 3 VORTEC MPI OWNER'S MANUAL Pdf Download. 4 Mercrusier. 7 vortec oil pressure 7. Mechanics use several different fuel pressure tests to determine the underlying cause. The Vortec V8 engines have become a very popular conversion into the later Jeeps. the fuel control system in order to allow for minor vehicle variations. 4 liter about a year ago. 4 uses a spider to the ports with check valves and the injectors are at the top. Mine litterally had fuel puddled up in the intake it was so bad. L31 vortec fuel injector flow rates (stock) but at 60psi fuel pressure, they flow 22. How do you check fuel pressure 98 Chevy 5. 4L Vortec Chevy Engine (Step-by-Step Guide) - Duration: 10:29. - Fuel: Measured fuel pressure at the rail's test port. Failed emissions test. And then learned how to adjust the regulator. test resistance and it falls within factory spec I would also guess the fuel pressure regulator or injectors because of your hard 7. The following Test is an On Car Test that checks the performance of the MAF sensor with the engine running. Fuel requirement: 87 octane Fuel pressure regulator problem symptoms and the diagnosis If you note these problematic signs that direct to a bad fuel pressure regulator, you can test the Pictured is a TBI complete system for a 2bbl Chevy V8. 4 Vortec coolant leak: Posted By: set an appointment at the GM dealership for a cold pressure test next week, will see Posted By: C350amg They quoted 6397$ to change both head gaskets and my fuel injectors (the injectors really leak that i know)6/15/2012 · oil presure issue 98 vortec 454? Im having an issue with the oil pressure gauge (maybe) At an idle it's where it should be, but when I give it gas (driving normal) it goes up then down and then back up. With a nice mild cam this thing will easily make well over 400whp/400wtq. but the bare minimum the engine needs to start is 50 PSI so anything less and it will crank for ever before it starts or not start at all. The Mercruiser 5. Not upgrading your valve springs is a bad idea. 8 out of 5 by 6 Install either the GM or Ford "screw on" adapter hose and hang the tool up to allow the fuel to drain for fuel pressure on a 2000 silverado 5. com #efi #conversion #kits We specialize in the design and manufacture of Standalone Wiring Harnesses for GM Gen II, III, and IV LS based engines and transmissions. Starts and runs well although it hasn't been test driven yet. Fuel Parts. 3 I would also do a fuel injector pressure drop test. The electrical fuel pumps come in high pressure and low pressure. With a warm engine do a compression test and re: 2000 gmc 7. 72 This pair of High Pressure Fuel Rail Adapters is required to connect to the vehicle's fuel line automotive fuel injection harness on the market. 617 g/sec or 28. I've replaced the rotor & cap, tested fuel-pressure, plugs & wires, throttle position sensor, new intake manifold gaskets, has a new transmission, can't find any vacuum leaks, not throwing codes, Sea-foamed it, even tried premium gas. then leveled of to a steady 7. 4-psi. GM Chevrolet 454 7. Where is the fuel pressure regulator on a 1997 Chevy 7. pressure test the cooling system to I have done vac check comp. Below is the GM test procedure and spec: FUEL PRESSURE Ignition "OFF" for 10 Seconds. 4L Vortecs who The culprit in my instance was a faulty fuel pressure dampener, AKA fuel Well its located under the upper intake manifold(the piece the throttle body is attached to). vortec 7. 201422 жов. should have no more than a 10 psi drop in pressure or so, and write down the 10 minute pressure. com/Cars/Discussion-d755_ds600776Hey everyone, I have a 1996 Chevy C1500 with a 5. Below are a few pictures of a fuel pressure gauge installed onto the fuel rail of a 1997 Chevy truck 1500 with a 5. 0L and 5. It is a component of the vehicle’s fuel system, and as it’s name implies, is Find CHEVROLET 7. They said it is the fuel pressure regulator. Pressure will drop when we start the volume flow test. but that would cause other issues if it was an 02. It can be considered the replacement for the Generation III LQ9 engine. One issue I found when I swapped the old carbed 350 out for a TBI 350, was while driving my truck, I noticed that after using about 13 gallons out of a 20 gallon tank, if I stopped too hard the fuel would slosh forward away from the pump pick-up and the truck would stall. Introduced in 1996, it was produced for five years, until replaced by the Vortec 8100. This harness is designed to be a complete wiring harness for the fuel injection system on General Motors 2003 and newer Vortec fuel injected engines with Drive By Wire Throttle Body and 4L60E or 4L80E transmission. psiconversion. 7L. 4 vortec in my k5. Dealers claim that Chevrolet vortec engine fuel Fuel pump and fuel pressure regulator problems lead to low fuel pressure. Pete : You may have to remove some air inlet tubing out of the way to locate it but it is up front on this engine where the fuel rail comes out from the upper intake. First I start with a new Fuel pump, STOCK 75lph TBI fuel pump will only support about 230hp before the fuel pressure drops like a rock. Odometer is 74762 miles below market average! Recent Arrival! 2002 White Diamond Pearl Toyota Avalon XL 4-Speed Automatic, ABS brakes, Front dual zone A/C. 4L fuel pressure leak-down test How to Change EGR Valve on 7. a rapid increase in manifold pressure causes fuel to condense on the manifold and intake port walls. more. 4L Vortec, correct? View and Download Painless Performance VORTEC 60211 installation instructions manual online. Does anyone know what correct fuel pressure should be at idle and running? My problem is truck will crank and run but doesnt want to rev up. Plugged the gauge in and turned the key on (did not crank) and it immediately hit 45 PSI and stayed steady. Products Items 1-30 of 336. No more removing your fuel filter - no more climbing underneath your vehicle - no more hassle - when checking your GM tbi fuel pressure!!! We've asked several gauge manufacturers for years to make an easier way to check fuel psi for the GM tbi engines. Share your experiences here. 7 and the FPR is under the the intake gasket problem is common on all vortec engines. Of course, don’t overlook the basics, such as low engine compression, low vacuum, low fuel pressure, leaky or dirty injectors, ignition misfire, excessive backpressure (plugged converter), etc. The 99+ Vortec trucks used a 5 wire sensor with a built in Air Temp Sensor. I love the 6. You must cut the wire, loosen the pressure screw with a 10 millimeter wrench and then you will be able to sneak the filter bowl out. Fuel pressure should be a constant 10 – 15 PSI on a TBI fuel injection system and is typically around 12 – 13 psi. The fuel tank pressure sensor has the final say in telling the computer if the tank pressure is holding during a key on pressure test. going to test a Comments section Fuel System Loses Pressure 22 Answers I have a 2003 Chevy S-10 Pick Up with the 4 cylinder & auto trans. 617 gram/second or 28. self-diagnostic test. I have a 98 gmc jimmy 4. 0L, or 5. I connected a fuel pressure gauge and the pressure is about 52 to 55 psi and it would immediately drop to 0 when the key/pump was turned off. Also note that the Vortec 5. We have built a reputation for the place to buy new and used vehicles. e. 4L, are these numbers ok? Simply putting oil in the cylinders as stated in the service bulletin will eliminate the rings from low compression. This is essential for the vehicle to run. If it is sooty I'm planning to buy a simple fuel pressure gage this week and I'll do some more troubleshooting. How to test a fuel injector for flow problems (GM) An external timer tool will be used to fire the injectors at exact intervals while watching fuel pressure drops In 1990 GM introduced the speed density system. wiring harness for 97 z71 off road vortec 350, vortec max 5 3l specs, 2003 vortec v6 engine water in oil. This should work on any GM that has a TBI. 98 chevy 2500 7. Safely tests vehicle fuel pressure systems on GM TBI vehicles not equipped with a Schrader or fuel access valve test port on the fuel line. 4 Vortec. Since 1938, Edelbrock has manufactured its core products in the USA for quality & performance. 3 / 6. I. But From running to nothing is very rare for a filter. The fuel pressure test port is on the fuel rail on the drivers side of the engine. 98 Sierra. AUDI 1985 – 00 AFC, MOTRONIC System System Residual w/o vacuum w/vacuum (PSI) Engine Year (PSI) (PSI) 2226cc 1991 43 – 46 35 – 39 36 – 40 2226cc 1992—95 58 – 61 – 49 – 54 2309cc 1992 – 93 – 55 – 61 46 2771cc 1992 – 99 55 – 61 48 – 54 32 – 44 3562cc 1990 – 91 58 – 62 49 Vortec 8100 Fuel rail system On the fuel pressure regulator (FPR), I built a test jig. 7 Vortec? off and connect the gage to that point. Just having the fuel pressure regulator, fuel hoses, poppet injectors outside of the intake adds flow from teh get go. You'll test this GM MAF sensor with a multimeter that can read Hertz (Hz) Frequency. 4 in a 2000 dually. Mar 14, 2017 General Tech - Fuel Pressure Regulator for 7. 7 Fuel Pressure. I suspect that if you remove the full engine cover on most overhead cam and other port fuel injected engines and hear all of the injector noise, it might be interesting. - Hey everyone, I have a 1996 Chevy C1500 with a 5. The fuel injection system in the car must supply fuel to the car engine with a constant optimal pressure. Vortec 6000 (6. In 2004, View and Download Painless Performance VORTEC 60211 installation instructions manual online. 8 in my Sierra RCSB. Dead head pressure from the fuel pump should be 70 to 80 psi or higher, and the pump Another feature that appeared on the early 4. Engine - 5. Anybody that thinks its not has their head up their ass. Vortec 454 Remove upper and lower intake - How to Ruin a Weekend - Duration: 32:33. 4L MPI Fuel Pressure Issue I am currently having the same problem with my 99 Nordic. 1 lb/hr. Low fuel delivery will cause an increase in LTFT as the PCM tries to compensate for extra oxygen in the exhaust stream. or even an 98 . FUEL PRESSUREFUEL PRESSURE SPECIFICATIONSSPECIFICATIONS 2. Oct 16, 2011 Showing fuel pressure static and running on a 1999 Vortec 5. This past weekend, the boat would start fine when cold, but not start again once it was hot. 4L 454 in my 3500 chevy dually. 3L Fuel Pressure Re: 97 silverado Vortec 7. so far can't figure it out Hmm by chance done a fuel volume test? Just because pressure is good does not mean it has good volume Or should I save a little more money and get a set of Vortec heads and a new intake manifold? You should test any fuel pressure change with a WOT acceleration run in Second gear from about 30 HFS (R) NEW Fuel Injection Pump Injector Tester Pressure Test Gauge Gasoline Car Truck price $ 246 . If this sensor isn’t working correctly the computer gets false information and turns on the check engine light. Vortec technology was first introduced by GM in 1986 in a V-6, 4. Had the same things going on as yours, hard starts and could actually smell a little fuel burning from under the hood once it got warm (seal was bad on an injector, so it was leaking down just barely). Another feature that appeared on the early 4. 4 L / 454 ) Description of our Mercruiser 5. Before 2006, the Sequential Fuel Injection (SFI) in medium duty trucks equipped with the Vortec 8. Starting at $4. I don't know what the spec is but this seems high enough to me that it should at least start and [try to] idle. 7 vortec sluggish, loss power. , since problems in any of these areas can produce similar driveability symptoms. 4+vortec+fuel+pressure+test&v=hgX5zZtuiAY Jun 14, 2016 hey guys i get questions all the time about fuel pressure issues on gm trucks this is a video showing how to test fuel pressure on the gm trucks  GMC ,TBi fuel pressure testing and fuel filter replacement - YouTube www