Positive Crankcase Ventilation Valve: Testing and Inspection

1NZ-FXE EMISSION CONTROL: PCV VALVE: INSPECTION

INSPECTION

1. INSPECT VENTILATION VALVE





(a) Check the ventilation.
(1) Install a clean hose to the ventilation valve as illustration.
(2) Check that there is ventilation when air is applied to the cylinder head side.
CAUTION: Do not suck the air inside the ventilation valve because it is harmful.

If there is no ventilation, replace the ventilation valve.




(3) Check that there no ventilation when air is applied to the intake manifold side.
If there is ventilation, replace the ventilation valve.