2. Inspect the cylinder head gasket and the mating surfaces of the head and cylinder block for cavities, signs of leakage, corrosion and gas breakthrough into the cooling jacket.
3. Inspect the cylinder head for cracks.
4. Using a set of feeler gauges and a straight edge, determine the deviation from flatness of the head plane mating with the gasket, which should not exceed 0.025 mm.
5. flatness of the head plane mating with the gasket, which should not exceed 0.025 mm.
6. Check all threaded holes for damage or contamination.
7. Inspect the valve seats for excessive wear and burnout.
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