RAV4 2-Door 4WD L4-2.0L (3S-FE) (1997)
Positive Crankcase Ventilation Valve: Testing and Inspection
INSPECTION
1. Remove Positive Crankcase Ventilation (PVC) valve.
2. Attach clean hose to PCV valve.
3. Inspect PCV valve operation.
(a)
Blow air from cylinder head side, and check that air passes through easily.
WARNING: Do not suck air through the valve. Petroleum substances inside the valve are harmful.
(b) Blow air into 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.