nissan Workshop Repair Guides

Nissan and Datsun Workshop Service and Repair Manuals

Sensors and Switches - Emission Control Systems > < PCV Valve Hose|Testing and Inspection
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Positive Crankcase Ventilation Valve: Testing and Inspection

POSITIVE CRANKCASE VENTILATION (PCV) INSPECTION

With engine running at idle, remove PCV valve from rocker cover. A properly working valve makes a hissing noise as air passes through it. A
strong vacuum should be felt immediately when a finger is placed over the valve inlet.

Sensors and Switches - Emission Control Systems > < PCV Valve Hose|Testing and Inspection