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Valve Lifters Cleaning and Inspection

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
  1. Clean the valve lifters in cleaning solvent.
    2. CAUTION: Refer to Safety Glasses Caution in Cautions and Notices.
  2. Dry the valve lifters with compressed air.
    3. Fig 1: Inspecting Areas Of Valve Lifters
    GM178485Courtesy of GENERAL MOTORS CORP.
  3. Inspect the valve lifters for the following:
    • Bent or broken clip (1)
    • Worn push rod socket (2)
    • Scuffed or worn sides (3)

      If the valve lifter shows wear, inspect the engine block lifter bores for wear or damage.

    • Flat spots on the roller (4)
    • Loose or damaged pin (5)
    • Plugged oil hole (6)
    • Worn or damaged roller bearing

      The roller should rotate freely with no binding or roughness.

    4. Fig 2: View Of Valve Lifter Guides
    GM347332Courtesy of GENERAL MOTORS CORP.
  4. Inspect the valve lifter guides for the following:
    • For cracks or damage
    • Excessive wear in the lifter mounting bores
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