Fuel Pressure Regulator: Service and Repair

Fuel Pressure Regulator:

REMOVAL

1. Ensure assembly is depressurized by removing fuel filler cap and release pressure from fuel system by opening the pressure relief valve on the fuel manifold.

2. Remove vacuum line at pressure regulator.

3. Remove three retaining screws from regulator housing.

Fuel Pressure Regulator:

4. Remove pressure regulator assembly, gasket and O-ring. Discard gasket and inspect O-ring for signs of cracks or deterioration.

CAUTION: If scraping is necessary, be careful not to damage fuel pressure regulator or fuel supply line gasket surfaces.

INSTALLATION

1. Lubricate fuel pressure regulator O-ring with a light oil.

CAUTION: Never use silicone grease. It will clog the injectors.

2. Make sure gasket surfaces of fuel pressure regulator and fuel injection manifold are clean.

3. Install O-ring and new gasket on regulator.

4. Install fuel pressure regulator on injector manifold. Tighten three retaining screws to 27-44 lb in (3-5 Nm).

5. Install vacuum line at pressure regulator.

6. START engine and check for fuel leaks.