Valve and Seat Refacing Measurements

WARNING: This page is about a different car, the 2006 Mercury Milan, 2006 Lincoln Zephyr, and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: After grinding valves or valve seats, check valve clearance.

Check the valve head and seat.
- Check valve angles.
- Check margin width.
- Be sure margin width is within specification. For additional information, refer to the General Specification chart in the appropriate engine article.
- If out of specification, install new components as necessary. Refer to the appropriate article for the procedure.
  
  Fig 1: Identifying Valve 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.