Search found 2 matches
- Thu May 20, 2004 5:38 pm
- Forum: Engine
- Topic: Help me understand how the PCV system works.
- Replies: 97
- Views: 21951
If the pressure in the intake manifold is greater than that in the crankcase (such as would occur under boost), the valve will close. The air that's vented from the crankcase via the PCV will be replaced by fresh air via the breather tubes in each valve cover (the other end of these tubes connect to...
- Wed May 19, 2004 5:56 pm
- Forum: Engine
- Topic: Help me understand how the PCV system works.
- Replies: 97
- Views: 21951
Straight from the horse's mouth...
Taken from the FSM for 2002 Legacy (USDM): EC-6 3. Crankcase Emission Control System The positive crankcase ventilation (PCV) system prevents air pollution which will be caused by blow-by gas being emitted from the crankcase. The system consists of a sealed oil filler cap, rocker covers with fresh a...