Fuel Rail: Service and Repair

Fuel Supply Manifold:

REMOVAL

1. Remove fuel tank filler cap and release pressure from fuel system at fuel pressure relief valve using Fuel Pressure Gauge T80L-9974-B.

2. Remove spring lock coupling.

3. Disconnect fuel supply and fuel return lines.

4. Remove upper intake manifold.

5. Disconnect wiring harness from fuel injectors.

6. Remove two fuel injector manifold retaining bolts.

7. Carefully disengage fuel injection supply manifold from fuel injectors.

8. Disconnect vacuum line from fuel pressure regulator and remove fuel injection supply manifold.

INSTALLATION

NOTE: When installing fuel injection supply manifold assemblies with new or used fuel injectors, particular attention should be paid to proper O-ring seating to ensure that no fuel leaks exist.

1. Push fuel injection supply manifold down to ensure all injector O-rings are fully seated in the fuel injection supply manifold cups and intake manifold.

2. Install retaining bolts while holding fuel injection supply manifold down. Tighten bolts to 20-30 Nm (15-22 lb ft).

3. Install spring lock coupling.

4. With injector wiring disconnected, turn ignition to the RUN position to allow the fuel pump to pressurize the system.

5. Using a clean towel, check for fuel leaks.

6. Connect fuel injector wiring harness. Run vehicle at idle for two minutes.

7. Turn engine OFF and inspect for leaks.