Which statement best describes signs of a worn or defective piston ring?

Which statement best describes signs of a worn or defective piston ring?

• A. Worn or defective ring indication
• B. Increased fuel efficiency
• C. No change
• D. Perfect compression

Answer: (A)

Recognizing worn piston rings comes down to noticing indicators of poor ring sealing. When rings are worn or defective, they don’t seal the combustion chamber properly, allowing blow-by and oil to enter areas they shouldn’t. This shows up as real symptoms like reduced compression on a compression test, increased oil consumption, and sometimes blue smoke from the exhaust. The best answer is the one that states there is an indication of a worn or defective ring because it directly acknowledges that a problem with the ring’s sealing is present. The other statements imply improvement or no change (more fuel efficiency, no change, or perfect compression), which would not describe signs of ring wear.

Recognizing worn piston rings comes down to noticing indicators of poor ring sealing. When rings are worn or defective, they don’t seal the combustion chamber properly, allowing blow-by and oil to enter areas they shouldn’t. This shows up as real symptoms like reduced compression on a compression test, increased oil consumption, and sometimes blue smoke from the exhaust. The best answer is the one that states there is an indication of a worn or defective ring because it directly acknowledges that a problem with the ring’s sealing is present. The other statements imply improvement or no change (more fuel efficiency, no change, or perfect compression), which would not describe signs of ring wear.