For 1990-2009 cars

Caution: Refer to Safety Glasses Caution in the Preface section.

1. Clean the sealing surfaces.
2. Inspect the cylinder head gasket and the mating surfaces for leaks, corrosion, and blowby.
3. Inspect the cylinder head for cracks.
4. Inspect the length and the width of the cylinder head using a feeler gage and a straight edge.
5. Check the sealing surfaces for damage.

Specification
The cylinder head sealing surfaces must be flat within 0.15 mm (0.0059 in) maximum.

6. Measure the height of the cylinder head from sealing surface to sealing surface. The cylinder head height should be 95.9-96.1 mm (3.775-3.783 in) (a). If the cylinder head height is less than 95.9 mm (3.775 in), replace the cylinder head.
7. Inspect all threaded holes for damage.
8. Inspect the valve seats for excessive wear and burned spots.