J 34730 Fuel Pressure Gauge

Notice: Do not use compressed air to test or clean a fuel pressure regulator. Excessive air pressure can damage the fuel pressure regulator.

Important: Always maintain cleanliness when servicing fuel system components.

1. Relieve the fuel pressure. Refer to Fuel Pressure Relief .
2. Clean any dirt from the fuel pressure regulator retaining ring.
3. Remove the vacuum hose from the pressure regulator.



4. Remove the retainer clip from the fuel pressure regulator (6).
5. Lift and twist the fuel pressure regulator in order to remove the fuel pressure regulator from the fuel pressure regulator housing using a shop towel to catch any spilled fuel.
6. Remove the regulator seal lower O-ring (2).
7. Remove the regulator assembly filter (3).
8. Remove the regulator seal upper O-ring (4).
9. Remove the regulator seal back-up ring (5).
10. Cover the fuel pressure regulator housing to prevent contamination from entering the fuel system.

Notice: 

1. Install the new O-rings on the fuel pressure regulator, if a new fuel pressure regulator is not being installed. Lubricate the O-rings lightly with clean engine oil.
2. Install the regulator seal lower O-ring (2).
3. Install the regulator assembly filter (3).
4. Install the regulator seal upper O-ring (4).
5. Install the regulator seal back-up ring (5).
6. Install the retainer clip to the fuel pressure regulator (6).



7. Install the vacuum line to the fuel pressure regulator.
8. Install the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
9. Inspect for leaks.

9.1.	Turn ON the ignition for 2 seconds.

9.2.	Turn OFF the ignition for 10 seconds.

9.3.	Turn ON the ignition.

9.4.	Visually inspect the fuel system for fuel leaks.

10. Install the rear seat cushion. Refer to Rear Seat Cushion Replacement in Seats.



11. Install the fuel injector sight shield (1) to the engine.
12. Install the fuel injector sight shield nuts (2).

Tighten
Tighten the nuts to 3 N·m (27 lb in).