Positive Crankcase Ventilation System
POSITIVE CRANKCASE VENTILATION SYSTEMOverview
PCV System:
The Positive Crankcase Ventilation (PCV) System (Figure 135) cycles crankcase gases back through the engine where they are burned. The PCV valve regulates the amount of ventilating air and blow-by gas to the intake manifold and prevents backfire from traveling into the crankcase. The PCV valve is designed with a quarter-turn cam-lock thread at one end to prevent accidental disconnection from the valve cover.
CAUTION: Do not remove the PCV system from the engine. Removal of the PCV system will adversely affect the fuel economy and engine ventilation and result in shorter engine life.
Hardware
PCV Internal Drawing:
PCV Vacuum Connector:
