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Valve Head O.D. and Chamfer Measurement Procedure

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. GM2371865

    Measure the valve head O.D. and chamfer (a) using an appropriate scale. Refer to Engine Mechanical Specifications .

  2. If the valve head O.D. and chamfer is within specification, test the valve (1) for seat concentricity using the Valve-to-Seat Concentricity Measurement Procedure. Reinspect the valve head O.D. and chamfer after completing the concentricity measurement if valve seat reconditioning is performed.
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