Fuel Pressure Regulator: Service and Repair

Throttle Body (Injection Mixer) Components:

REMOVAL
1. Reduce the internal pressure of the fuel pipes and hoses by completing the following operations:
a. Disconnect the fuel pump harness connector.
b. START and run the engine until it stalls, then turn the ignition switch to OFF.
c. Disconnect the battery negative terminal.
d. Connect the fuel pump harness connector.
3. Remove the three mounting bolts, then remove the fuel pressure regulator. Discard the two O-rings, they are not reusable.

INSTALLATION

Fuel Pressure Regulator O-ring Installation:

1. When connecting the fuel pressure regulator to the throttle body assembly, apply light oil or fuel to the two O-rings and then insert, being careful not to damage the O-rings.
2. After replacement of the fuel rail, check for leaks with the system pressurized.