Inspection Procedure
Courtesy of GENERAL MOTORS COMPANY
- Inspect the following components:
- Cylinder walls for excessive scratches, gouging, or ring ridge
- Cylinder bores for excessive ring ridge at the top of the cylinder
- Coolant jacket for cracks
- Valve lifter bores for excessive scoring or wear
- Crankshaft bearing webs for cracks
- Gasket sealing surfaces for excessive scratches or gouging - Refer to Replacing Engine Gaskets
.
- Oil galleries for restrictions
- Threaded bolt holes for damaged threads
- Cylinder bores for excessive ring ridge at the top of the cylinder
- Measure the cylinder bores for an oversize condition.