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Valve Stem Tip Height Measurement Procedure

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora and 2001 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
  1. To determine the valve stem height measure the distance from the valve spring seat, the flat metal surface of the valve stem oil seal, to the tip of the valve (1). Refer to Engine Mechanical Specifications  .
  2. If the maximum height specification is exceeded, the valve must be replaced and the stem height re-measured.
  3. If the stem height with a new valve still exceeds the maximum allowed, the cylinder head must be replaced.
    Fig 1: Measuring Valve Stem Tip Height
    G01815891Courtesy of GENERAL MOTORS CORP.
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