Fuel Pressure Regulator: Service and Repair

REMOVAL

1. Disconnect battery ground cable and secure it out of the way.
2. Remove fuel cap.
3. Release pressure from fuel system.
4. Remove vacuum line at pressure regulator.
5. Remove manifold inlet elbow.
6. Remove three retaining screws from regulator housing.
7. Remove pressure regulator assembly, gasket and O-ring.
8. If scraping is necessary, be careful not to damage fuel pressure regulator or fuel supply line gasket.



INSTALLATION

1. Lubricate fuel pressure regulator O-ring with engine oil.
NOTE: Never use silicone grease. It will clog the injectors.
2. Ensure gasket surfaces of fuel pressure regulator and fuel rail assemblies are clean.
3. Install O-ring and new gasket on regulator.
4. Install fuel pressure regulator on fuel rail assembly. Tighten the three retaining screws to 34 lb. in. (4 N-m).
5. Install manifold inlet elbow.
6. Install vacuum line to regulator.
7. Connect battery ground cable.
8. Add engine coolant.
9. Turn ignition switch from ON/OFF position several times without starting engine to check for fuel leaks.
CAUTION: The fuel system is normally pressurized to 39 psi.