Fuel Rail and Injectors Installation
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Lubricate the NEW fuel injector O-ring seals (532, 534) with clean engine oil.
- Install the O-ring seals to the fuel injectors.
- Install the fuel injectors (533) and retainers (521).
- 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.
- 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 .
- Install the fuel rail bolts (511) and tighten to 10 N.m (89 lb in).
- Install the evaporative emission (EVAP) canister purge solenoid valve (730) and tubes (729, 735).
- Install the fuel rail stop bracket and bolt and tighten to 50 N.m (37 lb ft).
WARNING:
Refer to Fuel Rail Stop Bracket Installation Warning .
NOTE:
DO NOT use the fuel injector O-ring seals again. Install NEW fuel injector O-ring seals during assembly.
CAUTION:
Refer to Fastener Caution .