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Home >> Cadillac >> 2021 >> CT4 Sport, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 282 (Engine Controls And Fuel - 6.2L (LT4) - Repair Instructions) >> Repair Instructions >> Fuel Injector Replacement - Bank 2 >> Installation Procedure

Installation Procedure

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  1. GM5022632Courtesy of GENERAL MOTORS COMPANY

    Install the fuel injector (3) to the fuel rail.

  2. Using the EN-51097  Injector Retaining Clip Installer (1), install NEW direct fuel injector hold down clamp (2) to the fuel injector (3).
  3. GM5571633Courtesy of GENERAL MOTORS COMPANY

    Fuel Injector Seal (1) - Install NEW [4x]

  4. GM5044586Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Do NOT use any type of lubricant when installing NEW seals (2) on the injector.

    Install EN-51105-1  Seal Installer Long Guide (3) onto the fuel injector tip. Place a NEW seal (2) on EN-51105-1  Seal Installer Long Guide.

    1. Using EN-49245-3  Seal Installer Pusher (1), install the seal onto the first recessed area (4) of the fuel injector.
    2. NOTE:

      The EN-49245-4  Seal Sizer is two sided, and either direction will size the seal correctly.

    3. Compress the seal with your fingers, then resize the seal using the EN-49245-4  Seal Sizer (5).
  5. GM5044590Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Do NOT use any type of lubricant when installing NEW seals (2) on the injector.

    Install EN-51105-2  Seal Installer Short Guide (3) onto the fuel injector tip. Place a NEW seal (2) on EN-51105-2  Seal Installer Short Guide.

    1. Using EN-49245-3  Seal Installer Pusher (1), install the seal onto the second recessed area (4) of the fuel injector.
    2. NOTE:

      The EN-49245-4  Seal Sizer is two sided, and either direction will size the seal correctly.

    3. Compress the seal with your fingers, then resize the seal using the EN-49245-4  Seal Sizer (5).
    4. Inspect the NEW fuel injector nozzle housing seals on ALL injectors, ensuring the seals are seated correctly. All seals must be fixed tight, and accurately to the fuel injector nozzle, with no overlap, buckling, or corrugation present. Replace any seal that is incorrectly seated on the fuel injector nozzle with a NEW seal.
  6. Install the fuel injection fuel rail assembly. Fuel Injection Fuel Rail Assembly Replacement - Bank 2 
  7. Pressurize the fuel system and inspect for leaks.