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Home >> Cadillac >> 2018 >> XTS Livery >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Engine Controls And Fuel - 3.6L (LFX LF3) - Repair Instructions >> Repair Instructions >> Fuel Injection Fuel Rail Assembly Replacement - Bank 2 (LFX) >> Removal Procedure

Removal Procedure

NOTE:

High pressure fuel feed pipes are one time use only. ALWAYS install a NEW high pressure fuel feed pipe if the pipe is removed OR the fittings are loosened.

  1. Relieve the fuel system pressure. Fuel Pressure Relief 
  2. Remove the fuel pipe shield. Fuel Pipe Shield Replacement (LFX) 
  3. Remove the intake manifold. Intake Manifold Replacement (LFX)
  4. Remove and DISCARD the fuel feed intermediate pipe. Fuel Feed Intermediate Pipe Replacement (LFX) 
  5. Remove the upper fuel injection fuel rail noise shield.
  6. Disconnect the engine wiring harness from the fuel injector wiring harnesses as necessary.
  7. Remove the fuel injector wiring harnesses from any brackets as necessary.
  8. GM2497626Courtesy of GENERAL MOTORS COMPANY

    If equipped, cut the tie strap (1).

  9. Disconnect the fuel pressure sensor electrical connector (2).
  10. Remove the fuel pressure sensor (3).
  11. GM2497627Courtesy of GENERAL MOTORS COMPANY

    Remove the bank 2 fuel injection fuel rail fasteners (1).

  12. GM2497674Courtesy of GENERAL MOTORS COMPANY

    Remove the bank 1 fuel injection fuel rail fasteners (1) for clearance purposes.

  13. GM2497628Courtesy of GENERAL MOTORS COMPANY

    Use the EN-49248 - 4  hooks to slowly work the fuel injection fuel rail (1) upwards in small, even increments.

  14. Once the fuel injection fuel rail (1) is free, remove the EN-49248  remover components.
  15. GM2497637Courtesy of GENERAL MOTORS COMPANY

    Slide the fuel injection fuel rail (1) toward the rear of the engine approximately 25 mm (1 in) and remove from the vehicle.

  16. NOTE:

    Whenever ANY fuel injector is removed from the cylinder head or the fuel injection fuel rail, the fuel injector MUST be rebuilt.

  17. Once the fuel injection fuel rail is removed, clean and inspect the fuel injectors. Fuel Rail and Injectors Cleaning and Inspection (LFX)