85. Fuel Rail and Injectors

Fuel Rail and Injectors Installation





1. Caution: Refer to Fuel Rail Stop Bracket Installation Caution in Service Precautions.

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 (532, 534) with clean engine oil.
2. Install the O-ring seals to the fuel injectors.
3. Install the fuel injectors (533) and retaining clips (521).





4. Install the fuel rail assembly (510) to the manifold. Push firmly on both sides of the rail until all the injectors have entered their bores.
5. Apply a 5 mm (0.2 inch) band of threadlock GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the threads of the fuel rail bolts.

6. Notice: Refer to Fastener Notice in Service Precautions.

Install the fuel rail bolts (511).
Tighten the fuel rail bolts to 10 Nm (89 inch lbs.).





7. Install the evaporative emission (EVAP) valve (730) and tubes (729, 735).





8. Install the fuel rail stop bracket and bolt.
Tighten the fuel rail stop bracket bolt to 50 Nm (37 ft. lbs.).