Service Manual, General Motors 4.3L Engine (TP ... - Kohler Power

6-100 Marine/Industrial 4.3L Engine
3. Dry the components with compressed air.
4. Use the J 8089 to clean the carbon from the cylinder head
combustion chambers.
Be careful not to scuff the combustion chambers.
5. Inspect the cylinder head for the following:
• Damage to the gasket surfaces
• Damage to the threaded bolt holes
• Burnt or eroded areas in the combustion chambers
• Cracks in the exhaust ports and combustion chambers
• External cracks in the water chambers
• Restrictions in the intake or exhaust passages
• Restrictions in the cooling system passages
• Rusted, damaged or leaking core plugs
4957
6. Measure the cylinder head for warpage with a straight edge
and feeler gauge
• A cylinder head block deck with warpage in excess of
0.10 mm (0.004 in) within a 152.4 mm (6.0 in) area must
be repaired or replaced.
• A cylinder head exhaust manifold deck with warpage in
excess of 0.05 mm (0.002 in) within a 152.4 mm (6.0 in)
area must be repaired or replaced.
• A cylinder head intake manifold deck with warpage in
excess of 0.10 mm (0.004 in) within a 152.4 mm (6.0 in)
area must be repaired or replaced.
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2000 Marine/Industrial