For 1990-2009 cars only
A closed crankcase ventilation system provides a more complete scavenging of crankcase vapors. Fresh air from the throttle body is supplied to the crankcase, mixed with blow-by gases, and then passed through a crankcase ventilation pipe/passage into the intake manifold.
Results of Incorrect Operation
A plugged positive crankcase ventilation (PCV) pipe/passage way may cause any of the following conditions:
| • | Rough idle |
| • | Stalling or slow idle speed |
| • | Oil leaks |
| • | Sludge in engine |
