2. With the engine idling at normal operating temperature, remove the valve (together with the hose) from the rubber sealing ring in the camshaft cover (photo).
Remove the crankcase ventilation valve from the camshaft cover
3. Place your finger on the end of the valve. If the engine speed decreases, the valves are working properly. If the engine speed does not decrease, the valve is faulty and must be replaced with a new one.
4. To replace the valve, remove it from the end of the hose, remembering its correct position (photo).
Remove the PCV valve from the hose
5. When purchasing a crankcase ventilation valve, make sure that the new valve is designed specifically for your model, taking into account the year of manufacture and engine size. Compare the old valve with the new one to make sure they are identical.
6. Insert the valve into the end of the hose.
7. Inspect the rubber sealing ring for damage and replace it with a new one if necessary.
8. Push the PCV valve back into place.
9. For further information on the crankcase ventilation system, see. v Section 6.
(Information copied from the portal: Mazbook)
Check the crankcase ventilation valve