buick Workshop Repair Guides

Buick Workshop Service and Repair Manuals

Fuel Injection Fuel Rail Assembly Replacement - Bank 1|Page 4473 > < Fuel Injection Fuel Rail Assembly Replacement - Bank 1
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9. Remove the fuel rail and injectors (1) as an assembly using the EN-49248 - remover.

10. Remove the fuel pressure sensor. Refer to Fuel Pressure Sensor Replacement - Fuel Injection Fuel Rail (LLT)   (See: Fuel Pressure

Sensor/Switch/Service and Repair/Fuel Pressure Sensor Replacement - Fuel Injection Fuel Rail)Fuel Pressure Sensor Replacement - Fuel Injection
Fuel Rail (LF1)   (See: Fuel Pressure Sensor/Switch/Service and Repair/Fuel Pressure Sensor Replacement - Fuel Injection Fuel Rail).

11. Remove and discard the direct fuel injector hold down clamps.

Note:  The direct fuel injectors must be rebuilt whenever the injector has been released from the fuel rail or cylinder head.

12. Once the fuel rail is removed, remove the fuel injectors and rebuild them. Refer to Fuel Rail and Injectors Cleaning and Inspection (LLT)   (See:

Engine, Cooling and Exhaust/Engine/Service and Repair/Overhaul/61. Fuel Rail and Injectors Cleaning and Inspection)Fuel Rail and Injectors
Cleaning and Inspection (LF1 or LFW)   (See: Engine, Cooling and Exhaust/Engine/Service and Repair/Overhaul/61. Fuel Rail and Injectors
Cleaning and Inspection).

Installation Procedure

1. Install the fuel rail with injectors (2) into the cylinder head evenly. 

Fuel Injection Fuel Rail Assembly Replacement - Bank 1|Page 4473 > < Fuel Injection Fuel Rail Assembly Replacement - Bank 1