General

Crankcase Ventilation System Description:

The compressed combustion gas which escapes past the piston rings into the crankcase is known as blowby gas. Blowby gas contains large amounts of Carbon Monoxide (CO) and Hydrocarbon (HC).

The Positive Crankcase Ventilation (PCV) system prevents the blowby gas from being emitted into the atmosphere. The PCV system routes crankcase blowby gas back into the intake system where it becomes part of the combustion process. The PCV system consists of the following components:
^ The PCV valve
^ The crankcase vent or air inlet tube
^ The air inlet filter or separator, if used
^ Any hoses or couplers