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Toyota Workshop Service and Repair Manuals

Positive Crankcase Ventilation Valve|Testing and Inspection|Page 3415 > < Leak Detection Pump, Evaporative System|Locations
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Positive Crankcase Ventilation Valve: Testing and Inspection

INSPECTION

INSPECT VENTILATION VALVE SUB-ASSEMBLY

Check the operation.

1. Install a clean hose as shown in the illustration.
2. Blow air into the cylinder head side and check that the air passes through freely.

CAUTION:  Do not suck air through the ventilation valve. Petroleum substances inside the ventilation valve are harmful.

3. Blow air into the intake manifold side and check that the air does not pass through freely.

If the operation is not as specified, replace the ventilation valve.

Positive Crankcase Ventilation Valve|Testing and Inspection|Page 3415 > < Leak Detection Pump, Evaporative System|Locations