Century V6-3100 3.1L VIN M SFI (1998)
Positive Crankcase Ventilation: Testing and Inspection
Results of Incorrect Operation
Crankcase Ventilation System Description General Description
A plugged valve may cause the following conditions:
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Rough idle.
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Stalling or slow idle speed.
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Oil leaks.
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Sludge in engine. A leaking valve would cause:
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Rough idle.
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Stalling.
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High idle speed.