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ENGINE 20 OVERHAUL 6. Remove spring cup, valve spring and spring seat. Keep components in their fitted order. 7. Remove and discard valve stem oil seal. valves. Cylinder head - inspection 1. Decarbonise cylinder head. particular attention to area between inlet and 3. Check core plugs for signs of corrosion and leakage, replace as necessary. 4. Check cylinder head for warping using a straight edge and feeler gauges. CAUTION: Cylinder head must not be 5. Check valve seat inserts for burning, pitting or damage, replace inserts if pitting cannot be |