If the piston groove drain holes for the oil...

Question 1 / 270705eccefa2bacbc34ba4d4791a

Question 1 of 270705eccefa2bacbc34ba4d4791a

If the piston groove drain holes for the oil control rings become clogged, which of the following is likely to occur?

Question 1 of 27070

If the piston groove drain holes for the oil control rings become clogged, which of the following is likely to occur?

🔍 Key Concepts

• Function of oil control rings on a piston • Purpose of drain holes in the oil control ring grooves • What happens if oil cannot drain from the ring groove back to the crankcase

💭 Think About

• Think about where the oil is supposed to go after the oil control rings scrape it off the cylinder wall. • If the drain holes are blocked, what builds up in the ring groove, and how does that affect the oil film on the cylinder wall? • Which option describes a direct mechanical result of trapped oil around the oil control ring, rather than a secondary or more distant effect?

✅ Before You Answer

• Identify the primary job of the oil control ring (not compression, not sealing combustion gases). • Decide what happens to the amount of oil on the cylinder wall when it cannot drain properly through the groove holes. • Eliminate choices that describe results that are less direct or that would typically be caused by other problems (e.g., fuel issues, general lubrication loss).

Question 1 of 27070

If the piston groove drain holes for the oil control rings become clogged, which of the following is likely to occur?

The oil control rings will seat improperly and wear rapidly.

The piston will overheat due to insufficient lubrication.

Excessive oil will remain on the cylinder wall.

Light brown smoke will emanate from the engine exhaust.

Question 1 / 270705eccefa2bacbc34ba4d4791a

Question 1 of 270705eccefa2bacbc34ba4d4791a

If the piston groove drain holes for the oil control rings become clogged, which of the following is likely to occur?

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Question 1 of 27070

If the piston groove drain holes for the oil control rings become clogged, which of the following is likely to occur?

🔍 Key Concepts

• Function of oil control rings on a piston • Purpose of drain holes in the oil control ring grooves • What happens if oil cannot drain from the ring groove back to the crankcase