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PCV Valve: Inspection: Inspection

  1. INSPECT VENTILATION VALVE SUB-ASSEMBLY 
    1. Install a clean hose to the ventilation valve.
    2. Check the ventilation valve operation.
      1. Blow air into the cylinder head side, and check that air passes through easily.
        Fig 1: Checking Flow Of Air Passing Thorough Cylinder Head Side
        GTY181874Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 Hose
        *a Air
        WARNING:
        • Do not suck air through the valve.
        • Petroleum substances inside the valve are hazardous to your health.
      2. Blow air into the intake manifold side, and check that air passes through with difficulty.
        Fig 2: Inspecting Air Flow From Intake Manifold Side
        GTY187017Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 Hose
        *a Air

        If the result is not as specified, replace the ventilation valve.

    3. Remove the clean hose from the ventilation valve.
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