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Question

Vertical scratches on the piston and ring faces are most likely caused by

O A. connecting rod and piston misalignment

O B. lack of oil

O c. abrasive particles

O D. None of the above.

Answer

C. Abrasive particles.

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Vertical scratches on the piston and ring faces are most likely caused by abrasive particles. These particles can enter the engine through the air intake or oil system and cause damage to the piston and rings as they move through the engine. The scratches can lead to reduced engine performance and increased oil consumption. It is important to regularly change the engine oil and air filter to prevent the buildup of abrasive particles in the engine.