Fuel Feed Pipe Replacement

Fuel Feed Pipe Replacement

Removal Procedure




1. Relieve the low side fuel system pressure. Refer to Fuel Pressure Relief (Low Pressure with CH 48027) (Fuel Pressure Relief (Low Pressure with CH 48027))Fuel Pressure Relief (High Pressure Side) (Fuel Pressure Relief (High Pressure Side))Fuel Pressure Relief (Low Pressure without Special Tool) (Fuel Pressure Relief (Low Pressure without Special Tool))Fuel Pressure Relief (Low Pressure Side with CH 48027-100) (Fuel Pressure Relief (Low Pressure Side with CH 48027-100)).
2. Disconnect the fuel feed line quick connect fitting (1) from the fuel feed pipe. Refer to Metal Collar Quick Connect Fitting Service (Metal Collar Quick Connect Fitting Service).




3. Loosen the fuel feed pipe fitting to the high pressure fuel pump.
4. Remove the fuel feed pipe bolts.
5. Remove the fuel feed pipe from the intake manifold.
6. Inspect the fuel feed pipe nut for damaged threads.
7. Inspect the fuel feed pipe sealing bail for damage or debris.
8. Replace the fuel feed pipe if any damage is found.

Installation Procedure




1. Ensure that the fuel feed pipe and fuel pump fittings are clean prior to assembly.
2. Lubricate the fuel feed pipe and the high pressure fuel pump fittings with silicon free engine oil GM P/N 12345610 (Canadian P/N 993193) or equivalent.
3. Position the fuel feed pipe onto the intake manifold.
4. Install the fuel feed pipe fitting to the high pressure fuel pump hand tight.

Caution: Refer to Fastener Caution (Fastener Caution).

5. Install the fuel feed pipe bolts.

* Tighten the bolts to10 Nm (89 lb in).
* Tighten the fitting to 30 Nm (22 lb ft).




6. Connect the fuel feed line quick connect fitting (1) to the fuel feed pipe. Refer to Metal Collar Quick Connect Fitting Service (Metal Collar Quick Connect Fitting Service).
7. Inspect for leaks using the following procedure:

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.

8. Install the low side fuel pressure service port cap.
9. Tighten the fuel fill cap.