Cylinder Head Cleaning and Inspection

CLEANING
To ensure engine gasket sealing, proper surface preparation must be performed, especially with the use of aluminum engine components.


INSPECTION
1. Inspect the cylinder head for out-of-flatness, using a straightedge and a feeler gauge. If tolerances exceed 0.0508 mm (0.002 inch) replace the cylinder head.
2. Inspect the valve seats for damage. Service the valve seats as necessary.
3. Inspect the valve guides for wear, cracks or looseness. If either condition exist, replace the cylinder head.