The PCV system on modern vehicles plays a major role in the proper operation of the engine. It is a very simple system and often time is forgotten about in diagnosis. The PCV or Positive Crankcase Ventilation system if working incorrectly can lead to many problems in driveability.
The PCV system works by allowing fresh air from your intake tubing to blow through the engine. This clean air then mixes with hydrocarbons and then passes into your intake manifold to be burned. The PCV system prevents pressure from building up in your engine and is also an emission device.
If you have a PCV system that is not working correctly you can have many problems with your vehicle. We will discuss some of these problems but first we must understand the components of the PCV system.
