Caravan FWD L4-2.4L VIN X (1997)
Positive Crankcase Ventilation Valve: Testing and Inspection
Fig 8 PCV Test -- Typical
WARNING: Apply parking brake and/or block wheels before performing any test or adjustment with the engine operating.
With the engine idling, remove the PCV valve from its attaching point.
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If the valve is operating properly, a hissing noise will he heard and a strong vacuum felt when placing a finger over the valve inlet (Fig. 8).
With the engine off, shake the valve.
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The valve should rattle when shaken.
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Replace the valve if it does not operate properly.
NOTE: Do not attempt to clean the PCV valve.
