nissan Workshop Repair Guides

Nissan and Datsun Workshop Service and Repair Manuals

Sensors and Switches - Emission Control Systems > < Positive Crankcase Ventilation|Description
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Positive Crankcase Ventilation: Testing and Inspection
Component Inspection

POSITIVE CRANKCASE VENTILATION

Component Inspection

1.CHECK PCV VALVE

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 valve inlet.
Is the inspection result normal?
YES  - INSPECTION END
NO - Replace PCV valve.

Sensors and Switches - Emission Control Systems > < Positive Crankcase Ventilation|Description