Montero Sport LTD 4WD V6-3.5L SOHC (1999)
Positive Crankcase Ventilation Valve: Testing and Inspection
POSITIVE CRANKCASE VENTILATION (PCV) VALVE CHECK
1. Hold the PCV valve with the vacuum side down. Using light pressure, depress the thin stick of the PCV valve spring by 5 - 10 mm (0.2 - 0.3 inch)
. Release pressure on the stick to see if the PCV valve spring will lift the stick to its original position.
2. If the stick returns quickly to its original position, the PCV valve is OK. If the stick does not return quickly. clean or replace the PCV valve.
