Hyundai Elantra HD: Positive Crankcase Ventilation (PCV) Valve. Description and Operation
Operation
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Engine condition |
Not running |
Engine condition |
Idling or decelerating |
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PCV valve |
Not operating |
PCV valve |
Fully operating |
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Vacuum passage |
Restricted |
Vacuum passage |
Small |
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Engine condition |
Normal operation |
Engine condition |
Accelerating and high load |
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PCV valve |
Properly operating |
PCV valve |
Slightly operating |
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Vacuum passage |
Large |
Vacuum passage |
Very large |
