Positive Crankcase Ventilation: Inspection

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. 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.

Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES

INSPECTION END

NO

Replace PCV valve. Refer to Exploded View .