Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2012 Buick Regal BaseFACTORY OEM SERVICE PROCEDURE

Fuel Injection Fuel Rail Assembly Replacement

Fig 1: Fuel Injector & Fuel Rail

Courtesy of GENERAL MOTORS COMPANY

Callout

Component Name

Preliminary Procedures

Relieve the fuel system pressure. Refer to Fuel Pressure Relief .
Remove the intake manifold. Refer to Intake Manifold Replacement (LEA) , Intake Manifold Replacement (LUK) .

Fuel Injection Fuel Rail Fastener (Qty: 4)

CAUTION:

Refer to Fastener Caution .

Tighten
25Y (18 lb ft)

Fuel Injection Fuel Rail

Procedure

Disconnect the electrical connector.
It is necessary to rebuild the fuel injectors. Refer to Direct Fuel Injector Replacement .

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.