PCV Valve: Inspection: Inspection

INSPECT PCV VALVE

Fig 1: Checking Ventilation Valve Operation (Cylinder Head Side)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Check the PCV valve operation.
  1. Install a clean hose as shown in the illustration.
  2. Blow air into the cylinder head side and check that the air passes through freely.
    WARNING:
    Do not suck air through the PCV valve. Petroleum substances inside the PCV valve are harmful.
  3. Blow air into the intake manifold side and check that the air does not pass through freely.
    
    Fig 2: Checking Ventilation Valve Operation (Intake Manifold Side)
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    If the operation is not as specified, replace the PCV valve.