Fuel Pressure Test Port: Service and Repair

Air Plenum And Fuel Rail Removal:

Fuel Pressure Connection:

REMOVAL:

1. Disconnect the negative battery cable.
2. Relieve the fuel system pressure, see MAINTENANCE PROCEDURES/FUEL SYSTEM PRESSURE RELIEF:
3. Remove intake manifold plenum, see INTAKE MANIFOLD PLENUM.
4. Clean area around the fuel pressure connection with GM X-30A or equivalent.
5. Remove the fuel pressure connection and seal, discard the seal.

INSTALLATION:

1. Place a new seal on the fuel pressure connection assembly.
2. Screw the fuel pressure connection assembly into the fuel rail and tighten to 10.0 Nm (88 lb.in).
3. Check for fuel leaks:
a. Connect the negative battery cable.
b. With engine OFF and ignition ON, check for fuel leaks.
c. Disconnect the negative battery cable.
4. Install the intake manifold plenum as per above procedure.
5. Set parking brake, and block the drive wheels.
6. START the engine and shift the transmission to DRIVE for automatics, or NEUTRAL for manuals.
7. Allow the engine to run for approximately seven minutes for the IAC valve pintle to relearn its idle control position.