Milan FWD L4-2.3L (2008)
Valve Seat: Service and Repair
Valve Seat Inspection
Valve and Seat Refacing Measurements
NOTE: Refer to the appropriate specification chart.
NOTE: After grinding valves or valve seats, check valve clearance.
1. Check the valve head and seat.
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Check valve angles.
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Check margin width.
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Be sure margin width is within specification.
2. Inspect for abnormalities on the valve face and seat. Install a new cylinder head assembly if abnormalities are found.
Valve Seat Width
NOTE: Refer to the appropriate specification chart.
1. Measure the valve seat width. If necessary, grind the valve seat to specification.
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Measure the intake valve seat width.
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Measure the exhaust valve seat width.
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Recheck the valve spring installed length after the seats have been ground, and shim the valve springs as necessary to achieve the correct
installed spring length.
Valve Seat Runout
NOTE: Refer to the appropriate specification chart.
1. Use a valve seat runout gauge to check valve seat runout.
