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Valve Seat Inspection

Valve and Seat Refacing Measurements 

NOTE: Refer to the appropriate Engine article for the specification.
NOTE: After grinding valves or valve seats, check valve clearance.

  1. 1.

    Check the valve head and seat.
    • Check valve angles.
    • Check margin width.
    • Be sure margin width is within specification.
GFD56544Courtesy of FORD MOTOR COMPANY

  1. 2.

    Inspect for abnormalities on the valve face and seat. Install a new cylinder head assembly if abnormalities are found.
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