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← TechnologyWhich risk increases when excessive bore polishing performed during engine piston installation?
A)Reduced oil retention on cylinder walls✓
B)Increased connecting rod bearing wear
C)Elevated exhaust valve temperatures
D)Accelerated fuel injector nozzle clogging
💡 Explanation
When excessive bore polishing occurs, surface roughness decreases which results in reduced oil retention because valleys and asperities needed for oil adherence are removed, leading to increased friction and wear. Therefore reduced oil retention increases, rather than bearing wear, valve temperature, or injector clogging which involve distinctly different failure mechanisms.
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