Fuel Rail: Service and Repair

Fuel Injection Supply Manifold:

NOTE: The upper intake manifold must first be removed for access to the fuel injection supply manifold. Service and Repair

WARNING: FUEL SUPPLY LINES WILL REMAIN PRESSURIZED FOR LONG PERIODS OF TIME AFTER ENGINE SHUTDOWN. FUEL SYSTEM PRESSURE MUST BE RELIEVED PRIOR TO FUEL SYSTEM SERVICE TO PREVENT POSSIBLE INJURY. REFER TO FUEL PRESSURE RELIEF.

Removal
1. Disconnect fuel line spring lock couplings: Service and Repair

2. Disconnect connectors from engine control sensor wiring at fuel injectors. Disconnect vacuum hose at fuel pressure regulator.

3. If required, remove fuel pressure regulator and fuel pressure relief valve from the fuel injection supply manifold as described.

4. Remove four retaining bolts and remove fuel injection supply manifold.

Installation

1. WARNING: ALWAYS USE NEW 0-RINGS WHEN ASSEMBLING FUEL INJECTION SUPPLY MANIFOLD COMPONENTS TO AVOID COMBUSTION FROM FUEL LEAKAGE.

2. Install fuel injection supply manifold, and make sure all fuel injectors are properly seated.

3. Install four fuel injection supply manifold retaining bolts. Tighten to: 15-23 Nm (11-16 lb.ft).

4. If removed, install the fuel pressure relief valve and fuel pressure regulator to the fuel injection supply manifold.

5. Connect engine control sensor wiring at fuel injectors.

6. Connect fuel line spring lock couplings.

7. Install intake manifold: Service and Repair

8. Run engine and check for fuel leaks.