Blue smoke is present in the exhaust. Technician A says this can indicate worn piston rings. Technician B says this can indicate improper valve adjustment. Who is correct?

Question

Quizplus · Accepted Answer

Blue smoke in the exhaust is an indication of burning oil, which can be caused by worn piston rings. Improper valve adjustment can lead to other problems, but not specifically blue smoke in the exhaust. Therefore, only Technician A is correct.

Blue Smoke Is Present in the Exhaust