Component Inspection

WARNING: This page is about a different car, the 2008 Infiniti EX35. However, it is still accessible from the selected car via links, so may be relevant.

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.

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

Is the inspection result normal?

YES: INSPECTION END

NO: Replace PCV valve.