During routine service a small amount of engine oil is found in the air cleaner housing. Technician A says the PCV valve may be clogged. Technician B says the engine could be overfilled with oil. Who is correct?
A)A only
B)B only
C)both A and B
D)neither A nor B

Question

Quizplus · Accepted Answer

The PCV valve is a one-way valve that allows crankcase gases to be drawn into the intake manifold. If the PCV valve is clogged, these gases will not be able to escape and will instead be forced into the air cleaner housing. This can cause engine oil to be deposited in the air cleaner housing.

During Routine Service a Small Amount of Engine Oil Is