Camry Wagon L4-2.0L (3S-FE) (1990)
Positive Crankcase Ventilation: Description and Operation
Positive Crankcase Ventilation System
A Positive Crankcase Ventilation (PCV) system is used to provide more complete scavenging of crankcase vapors. Fresh air from the air cleaner is
supplied to the crankcase, mixed with the blow-by gases and then passed through a ventilation hose into the intake system. Once in the intake system the
mixture is then added to the intake fuel/air charge and burned in the combustion process.