PCV System Description (3.0L Engine)
For locations of each component on the vehicle, refer to the Component Location Index - Refer to: Fuel and Emissions Systems Component Location Index(Mexico models) or Fuel and Emissions Systems Component Location Index(Mexico models) .
Some of the unburned gases in the combustion chamber will leak past the gap between the pistons and cylinders into the crankcase. The blow-by gases that include the unburned gases are returned through the positive crankcase ventilation (PCV) valve and are burned. This prevents the blow-by gases from escaping into the atmosphere.