Positive Crankcase Ventilation (PCV) System: Inspection

REMOVE V-BANK COVER
INSPECT PCV VALVE
1. Remove the PCV valve.
2. Install a clean hose to the PCV valve.
3. Inspect the PCV valve operation.
  1. Blow air into the cylinder head side, and check that air passes through easily.
    CAUTION: Do not suck air through the valve. Petroleum substances inside the valve are harmful.
    
    Fig 1: Inspecting PCV Valve Operation
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Blow air into the intake manifold side, and check that air passes through with difficulty.
  If operation is not as specified, replace the PCV valve.
4. Remove the clean hose from the PCV valve.
5. Reinstall the PCV valve.
Fig 2: Checking Air Passes
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT HOSES, CONNECTIONS AND GASKETS
Visually for cracks, leaks or damage.
REINSTALL V-BANK COVER

Fig 3: Checking Cracks, Leaks Or Damage
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002