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Valve Guide Inspection

  1. Measure the inner diameter of the valve guides in two directions where indicated. Verify the diameter is within specification. Refer to CYLINDER HEAD & VALVE SPECIFICATIONS .
  2. If the valve guide is not within specifications, ream the valve guide and install a valve with an oversize stem or remove the valve guide and install a new valve guide.
    Fig 1: Measuring Valve Guide Inner Diameter
    G02821344Courtesy of MAZDA MOTORS CORP.
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