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Valve Guide Inner Diameter

Measure the inner diameter of the valve guides in two directions where indicated.
- Refer to the appropriate ENGINE article for the procedure.
  
  Fig 1: Measuring Inner Diameter Of Valve Guides
  Courtesy of FORD MOTOR CO.
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.