Engine Fuel Pipes

Removal Procedure

Tools Required J 37088 tool set, Fuel Pipe Quick-Connect Separator.

Notice: Do Not attempt to repair the engine fuel feed pipe or the engine fuel return pipe. If the engine fuel feed pipe or the engine fuel return pipe is damaged, replace it.

1. Relieve the fuel system fuel pressure. Refer to Fuel Pressure Release.
2. Clean all engine fuel pipe connections and areas surrounding the engine fuel pipe connections before disconnecting the engine fuel pipe connections to avoid possible contamination of the fuel system.
3. Remove the quick-connect fittings in the engine compartment. Refer to Servicing Quick Connect Fittings. Service and Repair
4. Plug the chassis fuel feed pipe and the chassis fuel return pipe as required.
5. Remove the upper intake manifold assembly. Refer to Intake Air Plenum.
6. Remove the engine fuel return pipe from the fuel pressure regulator. Discard the O-ring.
7. Remove the engine fuel feed pipe from the fuel rail. Discard the O-ring.

Installation Procedure
1. Lubricate the new O-ring with clean engine oil, then connect the O-ring and the engine fuel return pipe to the fuel pressure regulator.
2. Lubricate the new O-ring with clean engine oil, then connect the O-ring and the engine fuel feed pipe to the fuel rail.

Tighten
^ Tighten the engine fuel pipe fittings to 17 Nm (13 lb ft).

3. Install the upper intake manifold assembly. Refer to Intake Air Plenum.
4. Install the quick-connect fittings in the engine compartment. Refer to Servicing Quick Connect Fittings. Service and Repair
5. Tighten the fuel tank filler pipe cap.
6. Install the negative battery cable.