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Was having problem starting pointed to fuel regulator changed fuel regulator. No fuel pressure. Then fuel pump and filter. Still no fuel pressure 0 psi I can hear the relay click and pump going.

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Clogged filter on motor or bad reg

Posted on Mar 27, 2015

Testimonial: "change regulator and fuel filter already"

  •  johnny rebel
    johnny rebel Mar 27, 2015

    change regulator again

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I have 5 lbs fuel pressure with key on not starting. When started get 30 lbs running. When turn off fuel pressure gauge goes to 0. Is it fuel pump ,fuel pressure regulator, or filter


I suspect the pressure regulator is not maintaining residual pressure. IT could be the regulator but I suspect that you have a leaking injector

Apr 08, 2015 | Cars & Trucks

1 Answer

What would cause no fuel pressure


Your fuel lines are clogged all UA gotta do is blow them out

Mar 27, 2015 | Cars & Trucks

2 Answers

Fuel pressure 1998 jeep grand cherokee 4.0 L V6


You should have a test port on the Fuel Supply rail, use a tool from a local auto parts "Tool Loaner program" where you can borrow tools for free,w/a deposit of course,then follow the steps provided;

MPI Fuel System Pressure Test

The MPI fuel system used in vehicles equipped with a 4.OL engine employs a vacuum balanced pressure regulator. Fuel pressure should be approximately 55-69 kPa (8-10 psi) lower with the vacuum line attached to the regulator than with the vacuum line disconnected. System fuel should be 214 kPa (31 psi) with the vacuum line connected to the regulator and 269 kPa (39 psi) with the vacuum line disconnected. CAUTION: Some fuel may be discharged when connecting fuel gauge to fuel rail.
  1. Connect a 0-414 kPa (0-60 psi) fuel pressure gauge to test port pressure fitting on fuel rail (Fig. 7).
  2. Remove vacuum line from pressure regulator.
  3. Start the vehicle.
  4. Note gauge reading. With vacuum line disconnected, fuel pressure should be approximately 269 kPa (39 psi).
  5. Connect vacuum line to pressure regulator. Note gauge reading. Fuel pressure should be approximately 214 kPa (31 psi).
  6. If fuel pressure is not approximately 55-69 kPa (8-10 psi) higher with vacuum line removed from regulator, inspect pressure regulator vacuum line for leaks, kinks or blockage. CAUTION: Fuel pressure will rise to as much as 655 kPa (95 psi) when the fuel return tine is pinched shut, shut engine down immediately after pinching oft fuel return line.
  7. If fuel pressure is low, momentarily pinch shut the hose section of the fuel return line. If fuel pressure remains low, inspect the fuel supply line, fuel filter, and fuel rail inlet for blockage. If fuel pressure rises replace fuel pressure regulator.
  8. If fuel pressure is above specifications, inspect the fuel return line for kinks and blockage.

Capacity Test

  1. Remove the cap from the pressure test port in the fuel rail.
  2. Connect a 0-414 kPa (0-60 psi) fuel pressure gauge to the pressure fitting on the fuel rail (Fig. 7).
  3. Start the vehicle. Pressure should be approxi- mately 214 kPa (31 psi) with the vacuum hose connected to the pressure regulator and 269 kPa (39 psi) with the vacuum hose removed from the pressure regulator.
  4. If the pressure is not to specification, check the following before replacing the fuel pressure regulator:
  • 4a - Inspect the fuel supply and return lines/hoses for kinks or restricting bends
  • 4b - Check the fuel pump flow rate. A good fuel pump will deliver at least 1 liter of fuel per minute with the fuel return line pinched off. If the fuel pump does not pump adequately, then inspect the fuel system for a plugged fuel filter or fuel pump inlet filter (sock). Fuel pump flow rate can be done by connecting one end of an old A/C gauge hose to the fuel test port on the fuel rail and inserting the other end of the hose into a container of at least 1 liter capacity. Run the fuel pump by installing a jumper wire into diagnostic connector terminals D1-5 and D1-6. Be sure to pinch off the fuel return line or most of the fuel will be returned to the fuel tank.

May 19, 2014 | 1996 Jeep Grand Cherokee

1 Answer

Low fuel pressure on neon 2003,have change fuel pump,but pressure is low can start if tank is full


Hi.

Check the fuel filter and fuel pressure regulator. They are part of the same assembly and are located on top of the fuel pump. To replace the regulator # Disconnect fuel supply line at the Filter/Regulator nipple and releas locking spring tab (2 in diag.) on the regulator, then turn counterclockwise and pull out. To test regulator use a gauge like this in fuel lines:Pump Pressure Tester.
Pressure in 2003 should be 58psi (48 in 2001 engines). Pressure will drop of about ten psi when you start engine.

There is also an automatic shut down relay ASR. If problem is the ASR the pressure will go down when the relay cuts off power to pump. Read voltages and see if the problem is electrical first before going for the regulator.

Jun 07, 2011 | Chrysler Neon Cars & Trucks

2 Answers

Crank tolong before it start


First check your fuel pressure regulator by pulling the vacuum line off and check for fuel there should not be any.Then start the car and with a pressure gauge hooked up to fuel rail pull the vacuum line off the pressure should rise 5-10 psi if it does'nt replace regulator.Next check the fuel pressure it should be 41-47 with key on and engine off if not within specs replace fuel pump.

May 02, 2011 | 1995 Buick Roadmaster

1 Answer

How would I replace my fuel Filter


The fuel filter is an integral component of the fuel pressure regulator, which is mounted on top of the fuel pump module, located in the fuel tank. When the fuel filter/regulator assembly requires service, the fuel tank must be removed from the vehicle, however, the fuel pump module does not need to be removed.
  1. Disconnect the battery ground cable.
  2. You dont have to relieve your fuel systems pressure because your jeep has an automatic bleeder.
  3. Remove the fuel tank assembly.
  4. Clean the area around the fuel filter/regulator.



0900c152800a96ce.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 5: Remove the fuel filter/pressure regulator retaining clip from the top of the assembly


0900c152800a96cf.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 6: Replace the old fuel filter/pressure regulator mounting gasket

  1. Disengage the retaining clamp from the top of the filter/regulator assembly. Discard the retaining clamp.
  2. Using 2 small prying tools, pry the filter/regulator assembly out from the top of the fuel pump module. The filter/regulator assembly will unsnap from the fuel pump module.
  3. Remove and discard the mounting gasket below the filter/regulator.
  4. Before discarding the fuel filter/pressure regulator assembly, inspect the assembly to verify that the O-rings are intact. If the smallest of the 2 O-rings cannot be found on the bottom of the filter/regulator, it may be necessary to remove it from the fuel inlet passage in the fuel pump module.

To install:


0900c152800a96d0.jpg enlarge_icon.gifenlarge_tooltip.gif

Fig. Fig. 7: Check the condition of the fuel filter/pressure regulator O-rings

  1. Clean the recessed area in the pump module where the filter/regulator assembly is to be installed.
  2. Check the replacement filter/regulator assembly to make sure that the new O-rings are already installed on the assembly.
  3. Apply a small amount of clean engine oil to the O-rings.
  4. Install a new gasket on top of the fuel pump module.
  5. Press the new fuel filter/pressure regulator assembly into the top of the fuel pump module until it snaps into position (a positive click must be heard or felt).
  6. The arrow on top of the fuel pump module should be pointed towards the front of the vehicle (12 O&rsquoclock position).
  7. Turn the filter/regulator assembly until the supply tube (fitting) is pointed to the 11 O&rsquoclock position.
  8. Install new retainer clamp (the clamp snaps over the top of the filter/regulator and locks to the flanges on the pump module).
  9. Install the fuel tank assembly.
  10. Connect the negative battery cable.

Jan 28, 2011 | 1996 Jeep Grand Cherokee

3 Answers

Truck stalls out in the mornings. auto zone said to hook aPSI tester to the fuel rale and they said it was to low i replaced the fuel pump still the same thing.auto zone .what a joke to the tune of...


Pressure regulator could be a factor, but may be part of the fuel pump assembly. Fuel filter could be a factor, but again, with some Chrysler vehicles the filter, regulator and such are all part of the fuel pump assembly.

Oct 03, 2010 | 2000 Dodge Durango

1 Answer

How to change fuel filter on 2000 dodge durango


Here ya go! Please don't forget to rate!

NOTE: A combination fuel filter and fuel pressure regulator is used on all engines. It is located on the top of the fuel pump module.
To Remove:

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  1. Before servicing the vehicle, refer to the precautions at the beginning of this section.
  2. Drain and remove fuel tank.
  3. Clean area around filter/regulator to prevent contaminants from entering pump module.
  4. Remove or disconnect the following:
    • Fuel filter/regulator by twisting and pulling up CAUTION
      Do not pull filter/regulator more than three inches from fuel pump module.
    • Old fuel tube clamp by gently cutting clamp, taking care not to damage fuel tube
    • Plastic fuel tube from filter/regulator by gently pulling downward
    • Filter/regulator from fuel pump module
To Install:
  1. Install or connect the following:
    • New clamp over plastic fuel tube
    • Filter/regulator to fuel tube by rotating filter/regulator in fuel tube until it is pointed towards front of tank
    • Line clamp to fuel line using special hose clamp pliers (number c-4124 or equivalent)
    • Filter/regulator (pressing by hand) into rubber grommet
  2. Rotate filter/regulator until pointed towards front of vehicle
  3. Install fuel tank.
  4. Check for fuel leaks.

Jul 11, 2009 | Dodge Durango Cars & Trucks

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