toyota Workshop Repair Guides

Toyota Workshop Service and Repair Manuals

Fuel Delivery and Air Induction > < PCV Valve Hose|Testing and Inspection
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Positive Crankcase Ventilation Valve: Testing and Inspection

PCV VALVE INSPECTION 

1. REMOVE PCV VALVE
2. INSTALL CLEAN HOSE TO PCV VALVE
3. INSPECT PCV VALVE OPERATION

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

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

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

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

4. REMOVE CLEAN HOSE FROM PCV VALVE
5. REINSTALL PCV VALVE

Fuel Delivery and Air Induction > < PCV Valve Hose|Testing and Inspection