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Component Inspection

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.

Fig 1: Checking Positive Crankcase Ventilation Valve
Courtesy of NISSAN MOTOR CO., U.S.A.