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Valve Spring Cleaning and Inspection

WARNING: This page is about a different car, the 2018 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.
  1. Clean the valve springs in solvent.
    2. WARNING:

    Refer to Safety Glasses Warning .

  2. Dry the valve springs with compressed air.
  3. Inspect the valve springs for broken coils or coil ends.
  4. GM1210909

    Measure the valve spring tension using the EN-22738-B  tester. Refer to Engine Mechanical Specifications 

  5. If low valve spring load is found, replace the valve springs. DO NOT use shims to increase spring load. The use of shims can cause the valve spring to bottom out before the camshaft lobe is at peak lift.
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