To check the serviceability of a PCV system, you must:
(1) Remove the PCV valve from the ventilation hose.
(2) Remove the valve from the head of the cylinder head.
3) reconnect the PCV valve to the ventilation ducts.
(4) Start the engine and keep it idling.
(5) Close the valve opening and verify that the intake manifold is present. If the suction is not felt, it is necessary to clean the valve.
(6) Turn off the engine and insert the thin rod in the valve opening.
7) Tick rod, check whether the plunger is moving inside the valve.
(8) If the plunger does not move, it is necessary to clean or PCV valve.