Installation Procedure

IMPORTANT: Lubricate the O-rings at the injector tips prior to installing the injectors into the intake manifold.

To install the fuel rail assembly to intake manifold do the following:
1. With the injectors pointing downward, lower the fuel line end of the fuel rail into the cylinder head ports.
2. Rotate the injectors into a horizontal position.
3. Align the injectors with their respective port holes.
4. Carefully push the fuel injectors into the holes making sure they have seated in the cylinder head.

Fig 1: Removing & Installing Fuel Rail Assembly

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install the fuel rail attaching bolts. Tighten: Tighten the fuel rail attaching bolts to 10 N.m (89 lb in).
Connect the fuel injector electrical connectors. Push in until a click is heard and pull back to ensure engagement.
Connect the positive crankcase ventilation (PCV) valve hose and connect the vacuum line to fuel pressure regulator. Make sure they are fully seated.

NOTE: Lubricate with clean engine oil the male end of the fuel rail that connects with the fuel supply line. Firmly press on the female coupler until a click is heard, then pull back to confirm engagement. Pinched, kinked, or damaged fuel lines must be replaced.

Lubricate with clean engine oil the male fuel feed line and male fuel return line connections. Attach the fuel feed line and pull back to confirm engagement. Attach the fuel return line and pull back to confirm engagement.
Connect the negative battery terminal. Tighten: Tighten the battery terminal bolts to 17 N.m (17 lb ft).
Prime the fuel system.
1. Cycle the ignition ON for 5 seconds and then OFF for 10 seconds.
2. Repeat step A twice.
3. Crank the engine until it starts. The maximum starter motor cranking time is 20 seconds.
4. If the engine does not start, repeat steps A-C.
With engine OFF and the ignition ON, pressurize the fuel system and inspect for leaks.
Install the air tube and air filter cover.