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Home >> Isuzu >> 2007 >> i-290 LS, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 84 (Engine Mechanical - 3.7L) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Valve Rocker Arm and Valve Lash Adjuster Cleaning and Inspection

Valve Rocker Arm and Valve Lash Adjuster Cleaning and Inspection

WARNING: This page is about a different car, the 2007 Isuzu i-370, 2007 GMC Canyon, and 2007 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Valve Rocker Arm
    GM637697Courtesy of GENERAL MOTORS CORP.
  1. Clean the valve rocker arms and valve lash adjusters in cleaning solvent.
  2. Dry the valve rocker arms and valve lash adjusters with compressed air.
  3. Inspect the valve rocker arms for the following conditions:
    • Excessive wear at the valve contact or valve lash adjuster socket area
    • A loose or damaged pin
    • A worn or damaged roller. The roller should rotate freely with no binding or roughness.
    4. Fig 2: View Of Valve Lash Adjuster
    GM637696Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Keep the valve rocker arms and valve lash adjusters in the order from where they where removed.
  4. Inspect the valve lash adjusters for the following conditions:
    • Excessive wear
    • Clogging of the oil passage
    • Damage
    • Collapsed or spongy
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