Caution: Refer to Fuel Rail Stop Bracket Installation Caution in the Preface section.
Important: DO NOT use the fuel injector O-ring seals again. Install NEW fuel injector O-ring seals during assembly.
- 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
Adhesives, Fluids, Lubricants, and Sealers
.
Notice: Refer to Fastener Notice in the Preface section.
- 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 vacuum hose to the fuel pressure regulator for the L59 engine.
- Install the fuel rail stop bracket and bolt.
Tighten
Tighten the fuel rail stop bracket bolt to 50 N·m (37 lb ft).