General Procedure

NOTE: Refer to general specifications in the appropriate Engine article for the appropriate specification.

NOTE: After grinding valves or valve seats, always check valve clearance.

Check the valve head and seat.
- Check valve angles.
- Check margin width.
- Be sure margin width is within specification.
  
  Fig 1: Checking Margin Width And Valve Angles
  Courtesy of FORD MOTOR CO.
Inspect for abnormalities on the valve face and seat. Install a new cylinder head assembly if abnormalities are found.