Positive Crankcase Ventilation Valve: Testing and Inspection

4GR-FSE EMISSION CONTROL: PCV VALVE: INSPECTION

1. INSPECT VENTILATION VALVE SUB-ASSEMBLY

(a) Install a clean hose to the ventilation valve sub-assembly.

(b) Check the ventilation valve sub-assembly operation.

(1) Blow air into the cylinder head cover side, and check that air passes through easily.





CAUTION:
Do not suck air through the valve.

Petroleum substances inside the valve are hazardous to your health.

If the result is not as specified, replace the ventilation valve sub-assembly.

(2) Blow air into the intake air surge tank side, and check that air passes through with difficulty.





CAUTION:
Do not suck air through the valve.

Petroleum substances inside the valve are hazardous to your health.

If the result is not as specified, replace the ventilation valve sub-assembly.

(c) Remove the clean hose from the ventilation valve sub-assembly.