System Overview
WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
The Closed Crankcase Ventilation (CCV) system uses intake manifold vacuum and crankcase pressure to ventilate blow-by gases from the crankcase and return the gases to the intake manifold for combustion. Additionally, the separator removes oil from the blow-by gas and returns it to the engine.
Do not permanently remove or render inoperative any part of the vehicle emission control system including related hardware. Failure to comply may violate applicable state and federal law.