Fuel Hose/Pipes Replacement - Engine Compartment

FUEL HOSE/PIPES REPLACEMENT - ENGINE COMPARTMENT

REMOVAL PROCEDURE

NOTE: Do not attempt to repair the engine fuel feed pipe or the engine fuel return pipe. Replace a damaged engine fuel feed pipe or the engine fuel return pipe.

1. Relieve the fuel system fuel pressure. Refer to Fuel Pressure Relief Procedure.
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. Disconnect the quick-connect fittings in the engine compartment.
4. Plug the chassis fuel feed pipe and the chassis fuel return pipe as required.
5. Remove the upper intake manifold assembly.
6. Remove the engine compartment fuel pipe retainer bolt.
7. Disconnect the engine fuel return pipe from the fuel pressure regulator. Discard the O-ring.




8. Disconnect 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.
2. Connect the engine fuel return pipe to the fuel pressure regulator.




3. Lubricate the new O-ring with clean engine oil.
4. Connect the engine fuel feed pipe to the fuel rail.

NOTE: Refer to Fastener Notice in Service Precautions.

Tighten the engine fuel pipe fittings to 17 N.m (13 lb ft).

5. Install the engine compartment fuel pipe retainer bolt.

Tighten the fuel pipe retainer bolt to 25 N.m (18 lb ft).

6. Install the upper intake manifold assembly.
7. Connect the quick-connect fittings in the engine compartment.
8. Connect the negative battery cable.
9. Inspect for fuel leaks using the following procedures:
1. Turn ON the ignition, with the engine OFF for 2 seconds.
2. Turn OFF the ignition for 10 seconds.
3. Turn ON the ignition, with the engine OFF.
4. Inspect for fuel leaks.