Fuel Rail: Service and Repair

Fuel Injection Supply Manifold:

REMOVAL
1. Remove intake manifold.

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 release.

2. Disconnect fuel line spring lock couplings.
3. Disconnect connectors from engine control sensor wiring at fuel injectors. Disconnect vacuum hose at fuel pressure regulator.
4. If required, remove fuel pressure regulator and fuel pressure relief valve from the fuel injection supply manifold as described.
5. Remove four retaining bolts and remove fuel injection supply manifold.

INSTALLATION

WARNING: Always use new O-rings when assembling fuel injection supply manifold components to avoid combustion from fuel leakage.

1. Install fuel injection supply manifold, and make sure all fuel injectors are properly seated.
2. Install four fuel injection supply manifold retaining bolts. Tighten to 15-23 Nm (11-16 lb ft).
3. If removed, install the fuel pressure relief valve and fuel pressure regulator to the fuel injection supply manifold as described.
4. Connect engine control sensor wiring at fuel injectors.
5. Connect fuel line spring lock couplings as described.
6. Install intake manifold.
7. Connect vacuum line to the fuel pressure regulator.
8. Run engine and check for fuel leaks.