Fuel Pressure Regulator: Service and Repair

NOTE: Tag injector electrical connectors for proper cylinder identification.

NOTE: Fuel system pressure must be released prior to any service of fuel injection components.


REMOVAL

1. Disconnect negative battery cable, and remove fuel tank cap.
2. Bleed off fuel pressure.
3. Remove regulator vacuum supply hose.

Fuel Pressure Regulator 3.3L:

4. Remove regulator hold down clamp screw.

Fuel Pressure Regulator Removal:

5. Using a thin flat screwdriver, pry regulator out of fuel rail. (do not use excessive force).

Fig. 25 Fuel Pressure Regulator-Typical:

6. Remove O-rings from regulator.

INSTALLATION

1. Install new O-rings on replacement regulator, and lube with clean motor oil.

Fig. 26 Fuel Pressure Regulator Installation:

2. Ensure plastic spacers are on regulator.
3. Install fuel pressure regulator into rail.
4. Install injector hold down screw. Torque to 60 in-lbs (7 Nm).
5. Install regulator vacuum hose.
6. Connect negative battery cable, and install fuel tank cap.
7. Connect the DRB II scan tool and select the Automatic Shut Down (ASD) Fuel System Test to pressurize fuel system and check for leaks. SEE COMPUTERS AND CONTROL SYSTEMS/SCAN TOOL ORIENTATION.

CAUTION: Unless the test is stopped or the ignition switch is turned to the OFF position the fuel pump relay and the ASD relay will remain energized for 7 minutes by the ASD Fuel System Test.