Question about 1997 Honda Civic

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This is what i have already done..

I have checked the fuel pump regulator,fule pump,fuel filter it's getting fuel up to the fuel rail..i checked for spark in all four cylinders and there fine..i checked the timeing belt and checked to make sure it had compression and that the top end was turning over it was all fine i checked all the fuses and relays they where fine also checked mass airflow sensor..fuel pressure regulator,injectors evrything i could possibly think of even emergency fuel cut off switch.i just cant figure it out..

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  • mos_hlub Apr 09, 2009

    i have 96 civic...no fuel going to the motor.. i put new fuel pump, check the relay on the passanger side by the glow box... i switch the relay from my brother running civic and still no fuel.. i check the fuel box and its good.. i turn key on fuel pump would not activate...need help..please.........

  • steven bruce May 11, 2010

    is the check engine light on?

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If you checked all that then all thats left is the ECU..L/H Footwell..if you done a jumpstart lately with booster cables then you could have damaged the ECU..check it out..Go on to APEXI website and itll give you the pin location for all the ECU'S honda make...then start con checking to see if there is a break in the wires. thats all i can think of.

Posted on Dec 06, 2008

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The regulator looks like this:
http://www.autopartswarehouse.com/images/product_images/thumbs/standard/std_fuel_pressure_regulator.jpg

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Signs of a Bad Fuel Pressure Regulator
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2000 Malibu Starts then looses fuel pressure I have replaced the fuel pump and the fuel pump relay still same problem


Keep in mind that you have several components there:
- Fuel Pump Sender Assembly,
- Fuel Pressure Regulator,
- Fuel Rail Assembly, and
- Fuel Injectors.

1.- Fuel Pump (Sender Assembly) - TESTING
Refer to the accompanying charts for fuel pump diagnosis and testing.

The fuel injection system remains under pressure, even after the engine has been turned OFF. The fuel system pressure must be relieved before disconnecting any fuel lines. Failure to do so may result in fire and/or personal injury.

eb744a2.jpg

Fig. 3.1L engine OBD system check to be done before fuel pump relay circuit diagnosis


26456ba.jpg

Fig. 3.1L engine fuel pump relay circuit diagnosis (1 of 2)


b3b739d.jpg

Fig. 3.1L engine fuel pump relay circuit diagnosis (2 of 2)


db78a73.jpg

Fig. View of the fuel pressure test port (Schrader valve)-3.1L engine

A - 3.1L engine fuel system pressure test (1 of 4)
B - 3.1L engine fuel system pressure test (2 of 4)
C - 3.1L engine fuel system pressure test (3 of 4)
D - 3.1L engine fuel system pressure test (4 of 4)

c8a9798.jpg

Fig. The fuel pump/fuel sender module assembly is mounted in the fuel tank


2.-
Fuel Pressure Regulator - REMOVAL & INSTALLATION

(the fuel pressure regulator, which is located on the fuel rail assembly)

NOTE:
Before removing the fuel regulator assembly, place a clean shop towel under the regulator to catch any fuel drips

  1. Properly relieve the fuel system pressure.
  2. If not done already, disconnect the negative battery cable.
  3. On the 3.1L engine, remove the intake manifold plenum, as outlined in .
  4. On the 2.4L engine, remove the fuel rail. Refer to procedure earlier in this section.
  5. Detach the vacuum line from the regulator.
  6. Place a shop towel under the regulator to catch any fuel that may drip out. Unfasten the fuel pressure regulator retaining screw, then remove the regulator by twisting and pulling it from the fuel rail.
  7. Remove and discard the O-ring seal. Inspect the filter screen for contamination and replace if necessary.
To install:
  1. Prior to assembling the pressure regulator to the fuel rail, lubricate the new rail-to-regulator O-ring seal with clean engine oil.
  2. Place the O-ring on the pressure regulator and install the pressure regulator to the fuel rail.
  3. Install the retainer or coat the regulator mounting screws with an approved thread locking compound and secure the pressure regulator in place. Tighten the mounting screw to 76 inch lbs. (8.5 Nm).
  4. If removed, install the fuel rail assembly to the engine.
WARNING The fuel return pipe must be connected before tightening the regulator retaining screw to prevent the regulator from rotating. Rotation of the regulator could damage the retainer and spacer bracket and lead to a fuel leak at the regulator inlet.
  1. Connect the fuel feed line and return line to the fuel rail assembly, use a backup wrench on the fittings to prevent turning.
  2. Attach the vacuum line to the regulator.
  3. On the 3.1L engine, install the intake manifold plenum.
  4. Connect the negative battery cable. Turn the ignition to the ON position for two seconds, then turn it to the OFF position for ten seconds. Turn again to the ON position and check for fuel leaks.

continue...

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1 Answer

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if you getting low fuel pressure after changing out the fuel filter and the pressure regulator, than the fuel pump may not pump correct amount of pressure. being 1993, the pump has age along and have run many miles, may have gotten weak and not pumping correct mount of psi.

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