Camry Wagon V6-180.5 2959cc 3.0L DOHC (3VZ-FE) (1993)
Positive Crankcase Ventilation: Description and Operation
PCV Valve System
PURPOSE
A Positive Crankcase Ventilation (PCV) system is used to provide more complete scavenging of crankcase vapors.
OPERATION
Fresh air from the air cleaner is supplied to the crankcase, mixed with blow-by gases and then passed through a metered orifice 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.