MPV L4-2606cc 2.6L SOHC (1989)
Positive Crankcase Ventilation Valve: Description and Operation
Positive Crankcase Ventilation System (PCV)
The PCV valve is operated by the intake manifold vacuum. When the engine is running at idle, the PCV valve is opened slightly and a small amount
of blowby gas is drawn into the combustion chamber to be burned. At higher engine speeds, the PCV valve is opened further, allowing a larger amount
of blowby gas to be drawn into the combustion chamber.