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Home >> Ford >> 2012 >> Explorer Base, 3.5 8, AWD, 6F50 >> Repair and Diagnosis >> External Pages >> Different car >> Section 89 (Engine Emission Control System) >> Description And Operation >> Engine Emission Control - 6.2L (2V), 6.8L (3V) >> System Overview

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.
NOTE: 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.
NOTE: The vehicle emission vacuum routing diagrams are contained in the Description and Operation subsection of the Evaporative Emission article. For additional information, refer to EVAPORATIVE EMISSIONS .

The Positive Crankcase Ventilation (PCV) valve, is a one-way valve that uses intake manifold vacuum to ventilate blow-by gases from the crankcase and returns the gases to the intake manifold for combustion.

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