General Procedure

NOTE: Refer to general specifications in the appropriate 303-01 engine section 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: Locating Valve Angles And Margin Width
Courtesy of FORD MOTOR CO.
Inspect for abnormalities on the valve face and seat. Install a new cylinder head assembly if abnormalities are found.