All Gasoline Engines
WARNING: This page is about a different car, the 2005 Ford RV Cutaway, 2005 Ford Econoline, 2005 Ford E450 Super Duty, and 2005 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
All gasoline engines are equipped with a positive crankcase ventilation (PCV) system. The function of the PCV system is to circulate blow-by gases from the engine crankcase to the engine intake.
The PCV system consists of:
- PCV valve
- PCV tube
The PCV valve:
- controls the amount of ventilating air and blow-by gases going to the intake manifold.
- prevents a backfire from reaching the crankcase.
For further description and operation, See INTRODUCTION - GASOLINE and/or INTRODUCTION -- 6.0L DIESEL .