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Home >> Buick >> 2018 >> Regal Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Mechanical - 3.6L (LGX) - Repair Instructions - Off Vehicle) >> Repair Instructions - Off Vehicle >> Valve Lifter Cleaning and Inspection

Valve Lifter Cleaning and Inspection

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  1. GM3959439
    CAUTION:

    Refer to Valve Lifter Priming Caution .

    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.