K 1500 Truck 4WD V6-4.3L VIN W (1997)
Piston: Testing and Inspection
Piston and Connecting Rod Inspection
1. Clean the connecting rod in cleaning solvent.
2. Dry the connecting rod with compressed air.
3. Clean the varnish from the piston skirts and the pins with the cleaning solvent.
4. Clean the piston ring grooves with a groove cleaner.
5. Do not use a wire brush in order to clean any part of the piston.
6. Clean the piston oil ring holes and the slots.
7. Inspect the connecting rod for twisting, nicks, and cracks. Replace any damaged connecting rods.
8. Inspect the pistons for the following conditions:
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Cracked ring lands, skirts, or pin bosses
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Nicks or burrs in the grooves that may cause binding
