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Home >> Nissan-Datsun >> 2012 >> Quest LE >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Component Testing >> Periodic Maintenance >> Positive Crankcase Ventilation >> Work Procedure
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Work Procedure

  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. Refer to "EXPLODED VIEW "

    Fig 1: Checking PCV Valve
    G08171612Courtesy of NISSAN NORTH AMERICA, INC.