Positive Crankcase Ventilation Valve: Testing and Inspection

1UR-FSE EMISSION CONTROL: PCV VALVE: INSPECTION

HINT
Although the part name refers to the ventilation valve sub-assembly, this procedure is for the PCV valve.

1. INSPECT VENTILATION VALVE SUB-ASSEMBLY

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





(b) Check ventilation valve sub-assembly operation.

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

CAUTION:
Do not suck air through the ventilation valve sub-assembly. Petroleum substances inside the ventilation valve sub-assembly are hazardous to your health.

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





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

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