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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 168 (Engine Mechanical - 3.6L (LGX LF4) - Repair Instructions - Off Vehicle) >> Repair Instructions - Off Vehicle >> Valve Lifter Cleaning and Inspection (LGX)

Valve Lifter Cleaning and Inspection (LGX)

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Valve Lifter Inspection Points
    GM3959439Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Valve Lifter Priming Caution .

  1. Inspect the hydraulic lash adjuster (HLA) in the following areas:
    • A plugged oil passage (1)
    • A scored or worn camshaft follower pivot area (2)
    • A damaged or broken retainer (3), some applications
    • A severely scuffed or worn HLA body (4)
  2. Inspect the duel feed hydraulic lash adjuster (DFHLA) in the following areas:
    • A plugged oil passage (5)
    • A scored or worn camshaft follower pivot area (6)
    • A damaged or broken retainer (7), some applications
    • A severely scuffed or worn DFHLA body (8)
  3. Replace the HLA or DFHLAs as necessary.