Fuel Pressure Regulator: Service and Repair

REMOVAL

1. Disconnect battery ground cable.

NOTE: When the battery has been disconnected and reconnected, some abnormal drive symptoms may occur while the powertrain control module relearns its adaptive strategy. The vehicle may need to be driven 10 miles or more to relearn the adaptive strategy.

2. Remove fuel filler cap and release fuel tank pressure.

3. Relieve the fuel system pressure, refer to Service and Repair / Fuel Pressure Relief Procedure.

4. Remove vacuum line at pressure regulator.

5. Remove three retaining screws from regulator housing.

6. Remove pressure regulator assembly, gasket and O-ring. Discard gasket and O-ring.

NOTE: If scraping is necessary, be careful not to damage fuel pressure regulator or fuel rail gasket surfaces.

INSTALLATION

1. Lubricate new fuel pressure regulator O-ring.

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

2. Ensure gasket surfaces of fuel pressure regulator and fuel rail assembly are clean.

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

4. Install fuel pressure regulator on fuel rail assembly. Tighten three retaining screws to 4.0 Nm (34 lb in).

5. Install vacuum line to regulator.

6. Install fuel cap at tank.

7. Connect battery ground cable.

8. Turn key ON/OFF several times without starting engine to check for fuel leaks.

9. Check all connections at fuel rails, push connect fittings, etc.