LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2012 >> G37 Base, 2D Convertible >> Repair and Diagnosis (Single Page) >> External Pages >> Different car >> Section 284 (Engine Control System - Component Testing) >> Positive Crankcase Ventilation >> Component Inspection
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Component Inspection

WARNING: This page is about a different car, the 2012 Infiniti G25. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK PCV VALVE

    With engine running at idle, remove PCV valve from rocker cover. Refer to "EXPLODED VIEW ". 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. Refer to "EXPLODED VIEW ".

    Fig 1: Checking PCV Valve Working Condition
    G08451669Courtesy of NISSAN NORTH AMERICA, INC.