Fuel Pressure Regulator: Service and Repair

Fuel Pressure Regualtor:

Intake Manifold Top Cover:

Removal Procedure

Caution: Compressed air must never be used to test or clean a fuel pressure regulator, as damage to the fuel pressure regulator may result. The fuel pressure regulator should not be immersed in solvent in order to prevent damage to the fuel pressure regulator.

1. Relieve fuel system pressure. Refer to Fuel Pressure Release.
2. Remove the intake manifold top cover.
3. Clean any dirt from the fuel pressure retaining ring.
4. Remove the vacuum hose from the pressure regulator.
5. Remove the retaining ring.
6. Catch any spilled fuel using a shop towel.
7. Lift and twist the fuel pressure regulator from the fuel rail socket.
8. Cover the fuel pressure regulator hosing to prevent contamination from entering the fuel system.
9. Clean the fuel pressure regulator filter screen with gasoline.

Installation Procedure

Important: When servicing the fuel pressure regulator, insure that the 0-ring backup, large 0-ring, filter screen, and small 0-ring are properly placed on the regulator.

1. Install the new 0-rings on the fuel pressure regulator, if a new fuel pressure regulator is not being installed.
2. Insert the regulator into the fuel rail socket using a turning motion to properly seat the 0-rings.
3. Install the retaining ring.
4. Install the vacuum hose to the fuel pressure regulator.
5. Install the intake manifold top cover.
6. Install the negative battery cable.
7. Inspect for leaks.

7.1. Turn the ignition switch ON for 2 seconds.
7.2. Turn the ignition switch 0FF for 10 seconds.
7.3. Turn the ignition switch ON.
7.4. Check for fuel leaks.