Question about 1994 Honda Civic

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Fuel regulator problem

How i want to know fuel regulator got problem?because i not sure my one is spoil or not.Sard air filter good or not?

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Pull out the line connected to the fuel regulator and turn on the key if possible try to start is just a few second time it's comond sense to recognised it and about ur sard air filter there are the same all brand make no different..


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Posted on Dec 29, 2008

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2 Answers

How do i change fuel filter


We need to know . On what first.

Jun 23, 2015 | 1993 Dodge Intrepid

1 Answer

Starter went out ,replaced, now it turns over but gets no fuel and wont start


When you removed the old starter and installed the new one, did you disconnect the battery? If not, you may have shorted something out. If you are positive you are not getting fuel to the injectors (carborator); turn your key to the on position just before starting it - and listen for the fuel pump to engage. If you do not hear the fuel pump, then you may need to replace it.
If you do hear it, then you may have a plugged fuel filter, or plugged injector(s). Even if only one is plugged, the car should still start, but would run poorly. Replace the filter first to see if it's the filter and for good measure replace the air filter - these two sorta go hand in hand as they air and fuel mixture is crucial for proper engine operation. Also, check to see if there is a secondary filter (fuel) in the engine compartment. If so, (this is an inline filter) replace it as well. This way you know that both fuel filters (if two) are good, as well as the airfilter. Also, if the old air filter looks torn, ripped, shredded, pull the air hose off the the throttle body (intake) and make sure it's not plugged. This will hinder the engine from starting - if the car has sat for a length of time, rats may have climbed inside it and ate through the air filter. When attempting to start, parts of this could be drawn into the throttle body or the air hose blocking sufficient air flow.
Last, if the fuel filter(s) and the airfilter do not make a differnence, and the fuel pump is engaging; it is possibly the fuel pump relay, or the fuel pressure regulator.
Please let me know if you need further assistance.

Aug 19, 2011 | Cadillac Escalade Cars & Trucks

1 Answer

Overreving with no power and excessive gas consumption air filter cleaned map sensor replaced fuel pump and filter


usually caused by busted diaphram in fuel pressure regulator allowing fuel to be drawn thru regulator directly to intake manifold. Pull vacuum line off regulator, plug line with golf tee, start car and watch to see if gas comes out of regulator. If yes, turn off car, replace regulator. The regulator sits near the fuel rail on the top of the engine as shown below. I will paste replacement instructions below from autozone.com in case you need to replace the regulator. Please let me know if you have any questions.
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Removal & Installation

4.2L Engine

  1. Relieve the fuel system pressure.
  2. Remove the air cleaner outlet resonator.
  3. Disconnect the engine wiring harness from the retaining clips at the front of the engine.
  4. Disconnect the fuel pressure regulator vacuum line.
  5. Clean any dirt from the fuel pressure regulator and the surrounding area.
  6. Disconnect the fuel return pipe.
  7. Remove the fuel return pipe retainer.
  8. Remove the fuel pressure regulator retainer.
  9. Remove the fuel pressure regulator.
  10. Inspect the regulator filter screen for contamination. If contaminated, replace the fuel pressure regulator.

To install:
  1. Install the regulator filter.
  2. Install the new O-ring on the fuel pressure regulator.
  3. Lubricate the fuel pressure regulator O-ring with clean engine oil.
  4. Push the fuel pressure regulator into the regulator housing on the fuel rail.
  5. Install the fuel pressure regulator retainer. Tighten the regulator retainer screw to 71 inch lbs. (8 Nm).
  6. Install the fuel return pipe retainer. Tighten the return pipe retainer screw to 71 inch lbs. (8 Nm).
  7. Connect the fuel return pipe.
  8. Connect the fuel pressure regulator vacuum line.
  9. Connect the negative battery cable.
  10. Inspect for leaks:
    1. Turn ON the ignition for 2 seconds.
    2. Turn OFF the ignition for 10 seconds.
    3. Turn ON the ignition.
    4. Inspect for fuel leaks.

  11. Install the engine wiring harness into the retaining clips at the front of the engine.
  12. Install the air intake resonator.

Dec 08, 2010 | 2002 Chevrolet TrailBlazer

1 Answer

Starts right up ,pick up good ,when cruseing speed is reached it misses badly have replaced air filter ,plugs and plug wires has 160000 miles on it


maybe fuel pressure issue. Make sure regulator (at end of fuel rail) is getting vacuum. Replace fuel filter (Under hood, passenger side, front side of shock tower, mounted in fuel line). If this doesn't fix it, recommend checking fuel pressure (Position the ignition switch and the A/C system in theoff position. Install a fuel pressure gauge in thethe fuel line at the fuel filter connection. Locateand block off the fuel pressure regulator vacuum line.Confirm that no leaks are present, then start theengine. While the engine is at idle, visually verifythe PSI reading on the gauge). Replace pump if pressure is below spec (43 PSI)
Please let me know if you have questions.

Oct 23, 2010 | 1994 Nissan Pickup

2 Answers

How do you change a fuel filter


All WJ models have two fuel filters, a strainer filter at the bottom of the fuel pump module inside the fuel tank and one exterior filter within the fuel pressure regulator. Both filters are designed for extended service. They do not require normal scheduled maintenance. Filters should only be replaced if a diagnostic procedure indicates to do so.

The combination fuel filter/pressure regulator is located in front of the fuel tank and above the rear axle. It is transversely mounted to a chassis crossmember (left-to-right). The filter/regulator is equipped with 3 fuel line fittings (2 at one end and 1 at the other end). The single fitting facing the left side of the vehicle is the supply line to the fuel rail. The 2 fittings facing the right side of the vehicle are connected to the fuel tank. Of these 2 fittings, the fitting towards the front is used for fuel return to the fuel tank. The fitting towards the rear is a pressure line.

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Fig.: Fuel filter / regulator location


External filter/regulator removal
WARNING: THE FUEL SYSTEM IS UNDER A CONSTANT PRESSURE (EVEN WITH THE ENGINE OFF). BEFORE SERVICING ANY FUEL SYSTEM HOSES, FITTINGS OR LINES, THE FUEL SYSTEM PRESSURE MUST BE RELEASED.

1. Remove fuel fill cap.
2. Remove fuel pump relay from Power Distribution Center (PDC). For location of relay, refer to label on underside of PDC cover.
3. Start and run engine until it stalls.
4. Attempt restarting engine until it will no longer run.
5. Turn ignition key to OFF position.
6. Disconnect negative battery cable at battery.
7. Raise vehicle.
8. Clean area around 3 filter/regulator fittings.
9. Disconnect fuel supply, fuel return and fuel pressure lines at filter/regulator. Special tools may be required.
10. Remove 2 mounting bolts and remove filter/regulator.



External filter/regulator installation
1. Before installing filter/regulator, be sure all fittings are cleaned of all dirt and contaminants.
2. Be sure o-ring is positioned into fuel return fitting in filter/regulator.
3. Apply a small amount of clean engine oil to o-rings.
4. Position filter/regulator to body and install 2 bolts. Tighten bolts. Refer to Torque Specifications.
5. Connect 3 fittings.
6. Connect negative battery cable to battery.
7. Start engine and check for leaks.


Hope helps (remember rated this).

Jul 05, 2010 | 2003 Jeep Grand Cherokee

1 Answer

No/Low Fuel Pressure after replacing in-tank fuel pump & filter


Need to have the fuel pressure checked at fuel rail to know for sure if there is a fuel pressure problem for sure. There may be a in line filter as well, you can also do a check of the pressure regulator by pulling the vacuum line off of it then try starting the car with it off and see if it runs, if it does the regulator is bad, but IF it doesnt run doesnt necessarly mean it is good, a lot of fuel filters have a bypass wich allows the gas to bypass the filter when it is full bad thing is the debris can then plug the injectors causing problems, or there could be a loss of signal to tell the injectors to give fuel to the cylinders from an electrical or a sensor failure. So it is best to test the pressure to know for sure if it is in the fuel line or the injectors if it is truly being starved of gas. hope this helps

Apr 13, 2010 | Hyundai Motor 2003 Sonata

1 Answer

What is the fuel pressure spec for a 2004 tahoe with 5.3 flex fuel. I have low power. Changed fuel filter, air filter and oil and still no power. Checked fuel pressure and had about 43 psi. not sure what...


I would change the fuel pressure regulator first, if no change in pressure the fuel pump is on the way out.I have a 01 silverado 4.8 and my fuel pressure is between 55and60 psi.

Feb 22, 2010 | 2003 Chevrolet Tahoe

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