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Home >> Ford >> 2004 >> Excursion 5.4 L, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 977 (Engine System) >> Description And Operation >> Engine >> Positive Crankcase Ventilation System
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Positive Crankcase Ventilation System

WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.

All engines are equipped with a closed-type positive crankcase ventilation system recycling the crankcase vapors to the upper intake manifold.

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