Fuel Pressure Regulator: Service and Repair

REMOVAL PROCEDURE
1. Relieve fuel system pressure. Refer to Fuel Pressure Relief Procedure.
2. Remove the upper intake manifold.
3. Disconnect the fuel pressure regulator vacuum line.
4. Remove the fuel pressure regulator retaining screw.
5. Using a shop towel to catch any spilled fuel, lift and twist the fuel pressure regulator in order to remove the fuel pressure regulator from the fuel rail.
6. Remove the retainer and spacer bracket from rail and discard.
7. Disconnect the fuel pressure regulator from the engine fuel return pipe.
8. Remove the fuel pressure regulator inlet O-ring and discard.

INSTALLATION PROCEDURE

CAUTION: Connect the fuel return line before tightening the regulator attaching screw in order to prevent the regulator from rotating. Rotation of the regulator could damage the retainer and spacer bracket and lead to a fuel leak at the regulator inlet.

1. Check the filter screen for contamination. If contaminated, replace the fuel pressure regulator.
2. Lubricate new pressure regulator inlet O-ring with clean engine oil and install on regulator inlet.
3. Install the regulator to the fuel return pipe.
4. Install the new retainer and spacer bracket into slot on fuel rail.

NOTE: Refer to Fastener Notice in Service Precautions.

5. Install the pressure regulator to fuel rail.

Tighten
Tighten engine fuel return pipe nut to 17 N.m (13 lb ft).

6. Connect the fuel pressure regulator vacuum line.
7. Install the pressure regulator attaching screw.

Tighten
Tighten pressure regulator attaching screw to 8.5 N.m (76 lb in).

8. Inspect and verify that retainer and spacer bracket is engaged in slots in fuel rail. Grasp and pull on regulator to ensure that it is properly seated.
9. Reinstall the upper intake manifold.
10. Tighten the fuel filler cap.

11. Reconnect the negative battery cable.

NOTE:
^ Do not use compressed air in order to test or clean a fuel pressure regulator as damage to the fuel pressure regulator may result.
^ Clean the fuel pressure regulator filter screen with gasoline if necessary.
^ Do not immerse the fuel pressure regulator in a solvent bath in order to prevent damage to the fuel pressure regulator.

12. Check for fuel leaks.
12.1. Turn the ignition switch ON for 2 seconds.
12.2. Turn the ignition switch OFF for 10 seconds.
12.3. Turn the ignition switch ON.
12.4. Check for fuel leaks.