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 engine fuel feed pipe at the fuel rail.




4. Disconnect the engine fuel return pipe at the fuel rail.




5. Remove the fuel pressure regulator retaining screw.
6. 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.
7. Remove the retainer and spacer bracket from rail and discard.
8. Remove the fuel pressure regulator from engine fuel return pipe.
9. 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. Inspect the filter screen for contamination. If contaminated, remove and 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 fuel return pipe to regulator.
4. Install the new retainer and spacer bracket into slot on fuel rail.
5. Install the pressure regulator to fuel rail.

NOTE: Refer to Fastener Notice in Service Precautions.

6. Install the pressure regulator attaching screw.

Tighten
Tighten pressure regulator attaching screw to 8.5 N.m (75 lb in).

7. 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.




8. Connect the fuel teed pipe at the fuel rail.

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




9. Connect the fuel return pipe at the fuel pressure regulator.

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

10. Install the upper intake manifold.
11. Install the fuel filler cap.
12. Reconnect negative battery cable.
13. Reconnect the negative battery cable.
14. Check for fuel leaks.
14.1. Turn the ignition switch On for 2 seconds.
14.2. Turn the ignition switch Off for 10 seconds.
14.3. Turn the ignition switch ON.
14.4. Check for fuel leaks.