If not functioning properly, the PCV valve can lead to numerous ... chamber of an internal combustion engine, small amounts ...

All engines allow some exhaust gases, unburned fuel and oil to “blow by” the ... which is a source of varying air pressure, the PCV valve maintains the optimal level of vacuum in the crankcase ...

With gas prices going through the roof ... valve is a one-way valve that recycles crankcase gases back into the engine to burn. A plugged PCV valve can result in a rough idle and poor mileage.