Fuel Pressure Regulator: Service and Repair

REMOVAL

1. Verify fuel rail assembly is depressurized by removing fuel tank cap and releasing pressure from fuel system at pressure relief valve on fuel rail assembly.

2. Disconnect battery ground cable and secure it out of the way.

3. Remove vacuum line at pressure regulator.

4. Remove three retaining screws from regulator housing.

5. Remove pressure regulator assembly, gasket and O-ring.

6. 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 new O-ring and gasket on regulator.

4. Install fuel pressure regulator on fuel rail assembly. Tighten the three retaining screws to 3.0-4.5 Nm (27-40 in lb).

5. Install vacuum line to regulator.

6. Connect battery ground cable.

7. Turn ignition switch from On/Off position several times without starting engine to check for fuel leaks.