3.22. Check and replacement of the valve of system of the operated ventilation of a case (PCV)

* Authors of the present manual recommend to make check of a condition of the PCV valve through each 24 000 km of a run!


The principle of functioning of the PCV system is in detail stated in the Head of the Control system of the engine.

1. The PCV system provides a conclusion of crankcase gases via the special valve on a hose back in the inlet pipeline from where they come to combustion chambers and are burned out during normal functioning of the engine. Besides the valve are a part of system the hose conducting from a cover of a head of cylinders to the inlet pipeline and a hose of supply of fresh air from the air cleaner under a cover of the valvate mechanism. The PCV valve with the hose connected to it is put in a cover of a head of cylinders.

2. At the engine working at single turns, warmed up up to the normal working temperature pull the valve up and take it together with the connected hose from the landing nest in a cover of a head of cylinders.

3. Press a finger to an opening in the PCV valve - depression has to be felt, otherwise make sure of passability of a hose, the union on the inlet pipeline and actually the valve. Replace defective components.
4. Kill the engine and shake the valve, - in good repair in the last the easy crash has to be heard. If no sounds are heard, replace the valve.

5. For replacement of the valve disconnect it from a hose, - try to remember how connection was organized.

6. Upon purchase of the new valve track that he answered on the standard size to the engine of your car. It will be most correct to compare the new valve to old removed from the engine directly.
7. Connect the new valve to a hose.

8. Check serviceability of a condition of a rubber hose and the plug through passage. Replace defective components.

9. Strongly put the valve on the regular place in a cover of a head of cylinders.