The part that is MOST-Likely to be a good indication of what is taking place in a cylinder is the:
A) piston ring
B) head gasket
C) spark plug
D) valve

Question

Quizplus · Accepted Answer

The spark plug's condition can indicate various engine issues such as oil burning, pre-ignition, and the type of combustion occurring, making it a good indicator of what is happening inside a cylinder.

The Part That Is MOST-Likely to Be a Good Indication