Fuel Rail and Injectors Installation
WARNING: This page is about a different car, the 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 Chevrolet TrailBlazer, and 2004 Buick Rainier. However, it is still accessible from the selected car via links, so may be relevant.
- Lubricate the NEW fuel injector O-ring seals with clean engine oil.
- Install the O-ring seals onto the fuel injectors.
- Install a new O-ring seal to the right side of the crossover tube.
- Assemble the crossover tube and bolt to the right fuel rail.
- Install the fuel rail, with fuel injectors, into the intake manifold.
Press evenly on both sides of the fuel rail until all of the injectors are seated in their bores.
- Apply a 5 mm (0.2 in) band of threadlock GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the threads of the fuel rail bolts. Refer to Sealers, Adhesives, and Lubricants .
- Install the fuel rail bolts.
Tighten:
- Tighten the fuel rail bolts to 10 N.m (89 lb in).
- Tighten the crossover tube right side retaining bolt to 3.8 N.m (34 lb in).
- Install the fuel rail stop bracket and bolt.
Tighten: Tighten the fuel rail stop bracket bolt to 50 N.m (37 lb ft).
CAUTION:
Refer to Fuel Rail Stop Bracket Installation Caution in Cautions and Notices.
IMPORTANT:
DO NOT use the fuel injector O-ring seals again. Install NEW fuel injector O-ring seals during assembly.
NOTE:
Refer to Fastener Notice in Cautions and Notices.