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Home >> Ford >> 2012 >> Fiesta SES, Standard Trans >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Emission Control System >> Description And Operation >> Engine Emission Control >> Crankcase Ventilation >> System Overview

System Overview

NOTE: The vehicle emission vacuum routing diagrams are contained in the Description and Operation of EVAPORATIVE EMISSIONS .
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 laws.

The crankcase ventilation system gathers blow-by vapors from the crankcase and returns them to the intake manifold and air cleaner for combustion.