Crankshaft Bearing Inspection
WARNING: This page is about a different car, the 2020 Buick Regal and 2019 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
- NOTE:
- All connecting rod and main journal bearings that have been used in a running engine must be replaced. Never re-use the crankshaft or connecting rod bearings.
- The following bearing wear conditions should be used to diagnose engine operating conditions or root cause of a condition.
Inspect for fatigue indicated by craters or pockets. Flattened sections on the bearing halves also indicate fatigue.
Inspect for excessive scoring or discoloration on both front and back of the bearing halves.
- Inspect the main bearings for dirt embedded into the bearing material.
Inspect for improper seating indicated by bright, polished sections.