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Gm fuel regulator how much fuel pressure should it have

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More detail on year & model would get more specific, but you should be around 38-42psi at your fuel rail. Hope this helps.

Posted on Apr 21, 2014

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Posted on Jan 02, 2017

SOURCE: gm no vacuum at fuel pressure regulator

Sounds like you need to take an air hose and blow threw it and then clean your intake manifold with the Seafoam intake it is a foam cleaner it works great i suggest you clean it 2 times 1 to get rid of build up second to clean the surface. We tend to service our engine, oil , Fuel filters but we forget our intake manifold it is vital to engine performance.Remember to rate my solution and leave testimonial this is how i earn my achievements here on FixYa Thanks in advance

Posted on Apr 26, 2012

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SOURCE: toomuch fuel pressure. fuel regulator replaced

how do you know it has too much fuel pressure? what is your car doing?

Posted on Jun 30, 2009

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SOURCE: fuel pressure regulator had no vacuum line connected

another engineers wet dream. think of it this way . what is normally in the intake when the engine is running.. answer vacume, hence the regulator gets its vacume without a hose connected to it as its already in a full time vacume chamber.no hose required . ps be carefull to seat the regulator and o rings securely into the housing befor you reattach the secureing metal clip.
good luck chris

Posted on Mar 23, 2009

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Can not locate the right fuel pressure regulator for my 1990 caddy allante 4.5l can you help?


check with GM spares shops as the regulator may have been upgraded to what you had
AS long as it fits , with the right fittings and the right pressure settings , the shape of it will make no difference to the operation

Jan 27, 2016 | 1990 Cadillac Allante

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2000 Chevy 1500 4.8L has 20 lbs fuel pressure. Pump ? Pressure regulator ? Replaced pump GM recommended & still same problem


Fuel Pressure Regulator and Control at AutoZone.com ...

www.autozone.com/fuel.../fuel-pressure-regulator-and-control
AutoZoneShop for Fuel Pressure Regulator and Control products with confidence at AutoZone.com. Parts are just part of what we do.

Sep 24, 2015 | Cars & Trucks

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Will ecu keep fuel pump from working


if the system includes the ecm to give power to a pump relay when required then the ecm will stop the pump working at times when the fuel pressure reaches the regulated pressure
I would be looking else where ,like having a pressure test done on the fuel system to find if relay, pump or regulator/ pressure sensor fault

Apr 22, 2015 | Cars & Trucks

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2002 pontiac grand am and when I get off the freeway it turns off. Also at a light. I have to keep reving it to stay started. When I put it in drive it shuts off. I also smell gas when I first start it....


Robin, if you smell gas you need to have that checked now!!! A fuel leak can result in a fire. Also check for engine codes and vacuum leaks The idle air control valve may be causing problems Hope this helps ,Bill

Jan 06, 2015 | 2002 Pontiac Grand Am

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TRUCK WONT CRANK ON ITS OWN I HAVE TO USE STARTING FUILED IN AIR INTAKE AN THEN CRANK IT ON ONCE ITS ON IT WONT PASS OVER 2000 RPMS


Sounds like a lack of fuel. I would start with the fuel filter being that it is the cheapest option. Check that the fuel pump is working and if that checks out then you should have the fuel pressure checked, the fuel pressure regulator may be bad. Most of the newer GM vehicles I have dealt with have a pressure regulator that I found out is only available if you purchase the entire fuel injection rail system.

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I need to know how to install a fuel pressure regulator on a 98 GMC K3500 4x4


The fuel pressure regulator is located under the upper intake manifold or plenum. This large aluminum casting must be removed for access.I assume this is a 454 c.i.d.old body style pick up. 2000 was a split year for GM. Both old and new body styles.

Feb 24, 2010 | 2000 GMC Sierra C/K3500

1 Answer

How to change a fuel pressure regulator in a 1997 pontiac grand prix


GM Century/Lumina/Grand Prix/Intrigue 1997-2000
Fuel Pressure Regulator - Removal & Installing

The fuel pressure regulator is a diaphragm-operated relief valve with fuel pump pressure on one side and regulator spring pressure and intake manifold vacuum on the other side. The regulator's function is to maintain a constant fuel pressure across the injectors at all times. The pressure regulator compensates for engine load by increasing fuel pressure as engine vacuum drops.

The fuel pressure regulator is serviced as a separate component. When servicing the pressure regulator, make sure that the O-ring back-up, large O-ring, filter screen and small O-ring are properly positioned on the pressure regulator.


44dcbf8.jpg Fig. Cutaway view of a typical fuel pressure regulator


REMOVAL & INSTALLATION
The need to work as cleanly as possible cannot be over-emphasized. Even the smallest amount of dirt, if allowed into the fuel pressure regulator and/or the fuel rail, will find its way to the fuel injectors. The nozzle openings of the injectors are very small. Keep hands and tools clean. Clean the areas to be disconnected with a suitable solvent. Carefully cover open fittings and connections to keep out foreign material. Dirt in the injectors almost guarantees a clogged fuel injector and engine performance problems.
3.1L and 3.4L (VIN E) Engines
  1. Disconnect the negative battery cable.
  2. Relieve the fuel system pressure using the procedures found in this section.
  3. Remove the upper intake manifold assembly. Please see .
  4. Disconnect the vacuum line from the pressure regulator.
  5. Remove the regulator retaining screw and remove the retainer bracket. Using a clean shop cloth to catch fuel spillage, carefully pull the regulator from the fuel rail. Twist the regulator slightly while removing to ease removal. Discard the O-ring.

4ecb713.jpg

Fig. Exploded view of the fuel pressure regulator mounting-3.1L and 3.4L (VIN E) engines
To install:
  1. Clean all parts well. DO NOT use shop compressed air to test or clean a fuel pressure regulator. Clean the fuel pressure regulator screen, if necessary. DO NOT immerse the fuel pressure regulator in a solvent bath or it will be damaged.
  2. If the filter screen has been contaminated, it should be removed and the pressure regulator replaced.
  3. Lubricate a new pressure regulator O-ring with clean engine oil and install on the regulator inlet.
  4. Install the fuel return pipe to the regulator.
  5. Install a new retainer and spacer bracket into the slot on the fuel rail and install the pressure regulator to the fuel rail. Tighten the fuel return line nut to 13 ft. lbs. (17 Nm).
  6. Connect the vacuum line to the pressure regulator and install the retainer screw. Tighten to 76 inch lbs. (8.5 Nm).
  7. Inspect and verify that the retainer and spacer bracket is engaged in the slots in the fuel rail. Grasp and pull on the regulator to ensure that it is properly seated.
  8. Install the upper intake manifold. Please see .
  9. Connect the negative battery cable.
  10. Inspect for leaks using the following procedure:
    • Turn the ignition switch to the ON position for 2 seconds.
    • Turn the ignition switch to the OFF position for 10 seconds.
    • Turn the ignition switch to the ON position again.
    • Inspect all areas for fuel leaks.

Other size engine can find in autozone.com (free register).

Hope this help (remember rated this).

Feb 08, 2010 | 1997 Pontiac Grand Prix

1 Answer

How to replace spider regulator on a 1999 gmc jimmy


This fuel pressure regulator is a component part of the SFI (sequential fuel injection) assembly, sometimes referred to as "spider". It resides inside of the air intake plenum and is accessed by removing the upper half of the intake. 
Good luck and hope this helps. 
Most of the time when your having problems, it's most likely going to be the whole spider unit. GM has been know to have problems with this type of fuel injection system. 
Check the vacum line to the fuel pressure regulator at the back of the spider housing by the high pressure fuel line. You can see it just in front of the distributor cap and spider assembly.

Apr 23, 2009 | 1999 GMC Jimmy

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My truck will not start. i have a new starter, alternator, fuel filter fuel pump, mas, air filter. any other suggestions. its fine once its started. i spay choke spray in it to get started.


I have had similar problems and had to replace the fuel pressure regulator. It's a major expense because it sets below the diaphram in the intake manifold. Ask your mechanic about it, it may be the issue. I would get about 30,000 miles between replacement, I've replace it 3 times since purchasing the 2000 chevy blazer new, first one was under warranty.

Jul 25, 2008 | 2000 Chevrolet Blazer

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