Engine Safety (Supplementary) USCG Question #671 (Set 8)

Excessive wear at part #11, shown in the illustration would result in __________. Illustration MO-0027

Official USCG Answer & Rule Citation

Correct Answer: Option B — increased oil consumption

Oil control rings regulate the film thickness of lubricating oil along the cylinder liner wall. Excessive wear at this location permits an abundance of oil to bypass the rings into the combustion chamber, resulting in elevated lubricating oil consumption and smoky exhaust.

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