PCV Valve: Inspection: Inspection

INSPECT VENTILATION VALVE SUB-ASSEMBLY
1. Install a clean hose to the ventilation valve sub-assembly.
2. Check the ventilation valve operation.
  1. Blow air into the cylinder block side and check that air passes through easily.
    
    Fig 1: Checking Ventilation Valve Operation
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    If the result is not as specified, replace the ventilation valve sub-assembly.
    
    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: Blowing Air Into Intake Manifold Side
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    If the result is not as specified, replace the ventilation valve sub-assembly.
3. Remove the clean hose from the ventilation valve sub-assembly.