Inspection

1. Inspect cylinder head gasket and mating surfaces for leaks, corrosion and blow-by. If the gasket has failed, determine the cause.
- Insufficient torque on head bolts
- Improper installation
- Loose or warped cylinder head
- Missing dowel pins
- Warped case surface
2. Cylinder head bolts for damaged threads or stretching and damaged heads caused by improper use of tools.

NOTE: Replace used cylinder head bolts.

3. Cylinder head for cracks, especially between valve seats and in the exhaust ports.
4. Cylinder head deck for corrosion, sand particles in head and porosity.

CAUTION: Do not attempt to weld the cylinder head. Replace it.

5. Cylinder head deck, intake and exhaust manifold mating surfaces for flatness. These surfaces may be re-conditioned by milling. If the surfaces are "out of flat" by more than specification, the surface should be ground to within specifications. If more than repairable limit of specification, it should be replaced.
6. Water jacket sealing plugs seating surfaces.