Positive Crankcase Ventilation Valve: Testing and Inspection

2UZ-FE EMISSION CONTROL: PCV VALVE: INSPECTION

INSPECTION

1. INSPECT VENTILATION VALVE SUB-ASSEMBLY





(a) Install a clean hose to the ventilation valve.
(b) Inspect the ventilation valve operation.
(1) Blow air into the cylinder head side, and check that air passes through smoothly.
CAUTION:
Do not suck air through the valve. Petroleum substances inside the valve are harmful.




(2) Blow air into the intake manifold side, and check that air does not pass through smoothly.
If operation is not as specified, replace the ventilation valve.
(c) Remove the clean hose from the ventilation valve.