Engine Block Clean and Inspect

1. Clean the following areas:

NOTE: Do not use a caustic solution to clean the aluminum engine block.

^ The engine block in the solvent, remove all sludge, dirt, or debris.

WARNING: Wear safety glasses In order to avoid eye damage.

^ Dry the block with compressed air.
^ The gasket surfaces. Refer to Replacing Engine Gaskets. Replacing Engine Gaskets
^ The coolant passages
^ The oil galleries
^ Main bearing caps
2. Inspect the following areas:
^ The cylinder walls for excessive scratches, gouging, or ring ridge
^ The coolant jacket for cracks
^ The valve lifter bores for excessive scoring or wear
^ The crankshaft bearing webs for cracks
^ The gasket sealing surfaces for excessive scratches or gouging
^ The oil galleries for restrictions
^ All threaded bolt holes for damage
3. Measure the following areas:
^ The cylinder bores for taper Refer to Piston Selection. Piston Selection
^ The cylinder bores for out-of-round Refer to Piston Selection.
^ The cylinder bores for excessive ring ridge at the top of the cylinder. Recondition cylinders with less than 0.025 mm (0.0010 inch) wear or taper with a hone. Cylinders with more than 0.025 mm (0.0010 inch) wear or taper are not serviceable.