TIBURON(GK) > 2003 > G 2.7 V6 DOHC > Emission Control System > Crankcase Emission Control
System > Positive Crankcase Ventilation (PCV) Valve > Description and Operation, TIBURON(GK) >
2003 > G 2.7 V6 DOHC > Emission Control System > Crankcase Emission Control System > Positive
Crankcase Ventilation (PCV) Valve > Description and Operation
OPERATION
Intake manifold side (No vacuum)
Rocker cover side
Intake manifold side (High vacuum)
Rocker cover side
Engine condition
Not running
Engine condition
Idling or decelerating
PCV valve
Not running
PCV valve
Fully operating
Vacuum passage
Restricted
Vacuum passage
Small
Intake manifold side (Moderate vacuum)
Rocker cover side
Intake manifold side (Low vacuum)
Rocker cover side
Engine condition
Normal operation
Engine condition
Accelerating and high load
PCV valve
Properly operating
PCV valve
Slightly operating
Vacuum passage
Large
Vacuum passage
Much large
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24.04.2008
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