PCV Valve: Description

The PCV valve contains a spring loaded plunger. The plunger meters the amount of crankcase vapors routed into the combustion chamber based on intake manifold vacuum. See Fig 1 and Fig 2.

Fig 1: PCV Valve 2.4L

Courtesy of DAIMLERCHRYSLER CORP.

Fig 2: PCV Valve 3.3/3.8L

Courtesy of DAIMLERCHRYSLER CORP.