Notice: Cap the fittings and plug the holes when servicing the fuel system in order to prevent dirt and other contaminants from entering the open pipes and passages.

Important: Always maintain cleanliness when servicing fuel system components.

1. Relive the fuel pressure. Refer to Fuel Pressure Relief .



2. Remove the fuel rail. Refer to Fuel Injection Fuel Rail Assembly Replacement .
3. Clean any dirt from the fuel pressure regulator retaining ring.
4. Remove the snap ring (1).
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 (2) from the fuel pressure regulator housing.
6. Remove the pressure regulator small O-ring (6).
7. Remove the pressure regulator filter screen (5).
8. Remove the pressure regulator large O-ring (4).
9. Remove the pressure regulator O-ring back up (3).
10. Cover the fuel pressure regulator housing in order to prevent contamination from entering the fuel system.

Notice: 

1. Install new O-rings on the fuel pressure regulator. Lubricate the O-rings lightly with clean engine oil.
2. Install pressure regulator O-ring back up (3).
3. Install pressure regulator large O-ring (4).
4. Install pressure regulator filter screen (5).
5. Install pressure regulator small O-ring (6).
6. Install the fuel pressure regulator (2) in the fuel pressure regulator housing.
7. Install the snap ring (1).
8. Reinstall the fuel rail. Refer to Fuel Injection Fuel Rail Assembly Replacement .
9. Tighten the fuel fill cap.

Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

10. Reconnect the negative battery cable.
11. Inspect for leaks.

11.1.

Turn the ignition switch ON for 2 seconds.

11.2.

Turn the ignition switch OFF for 10 seconds.

11.3.

Turn the ignition switch ON.

11.4.

Check for fuel leaks.