While checking main bearing clearance on an inverted diesel engine, the strip of Plastigage under one main shows notably more squish than the remaining mains. What does this likely indicate on this main bearing?

Question

Quizplus · Accepted Answer

Insufficient bearing clearance is indicated by more squish of the Plastigage, as it shows the bearing is tighter compared to others, leading to less clearance.

While Checking Main Bearing Clearance on an Inverted Diesel Engine