Ranger 2WD V6-245 4.0L VIN X SFI (1997)
Positive Crankcase Ventilation Valve: Description and Operation
Typical PCV Valve
PURPOSE
The PCV valve regulates the amount of ventilating air and blow-by gas to the intake manifold and prevents backfire from traveling into the
crankcase.
NOTE: Do not remove the PCV system from the engine. Removal of the PCV system will adversely affect fuel economy and engine ventilation
resulting in shorter engine life.