| TIBURON(GK) >2005 > G 2.7 DOHC > Emission Control System > Crankcase Emission Control System > Positive Crankcase Ventilation (PCV) Valve>Description and Operation |

OPERATION
Engine condition | Not running | Engine condition | Idling or decelerating
PCV valve | Not operating | PCV valve | Fully operating
Vacuum passage | Restricted | Vacuum passage | Small
Engine condition | Normal operation | Engine condition | Accelerating and high load
PCV valve | Properly operating | PCV valve | Slightly operating
Vacuum passage | Large | Vacuum passage | Very large