Valve and Seat Refacing Measurements

WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Refer to the appropriate ENGINE article for the specification.

NOTE: 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.

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.