Technician A says that the PCV system should create a slight pressure in the crankcase at idle. Technician B says that the PCV system should create a slight vacuum in the crankcase at 2,500 RPM. Which technician is correct?

Question

Quizplus · Accepted Answer

The PCV (Positive Crankcase Ventilation) system is designed to create a slight vacuum in the crankcase, not pressure, to help remove gases and reduce the risk of explosion. This vacuum is maintained both at idle and at higher RPMs, making Technician B's statement correct.

Technician a Says That the PCV System Should Create a Slight