B2300 SE Regular Cab 2WD L4-2.3L VIN D (2001)
Positive Crankcase Ventilation Valve: Description and Operation
Positive Crankcase Ventilation (PCV) System
POSITIVE CRANKCASE VENTILATION (PCV) SYSTEM
PCV Valve
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Mounted in a vertical position.
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Regulates the amount of ventilating air and blow-by gas to the intake manifold and prevents backfire from traveling into the crankcase.