9.1. Scheme of air circulation in the forced crankcase ventilation system (PCV): 1 - PCV system valve, 2 - air filter, 3 - crankcase outlet hose, 4 - PCV system valve hose, a - Clean air b - Crankcase gases, c - Mixture of air and gases
2. The main elements of the PVC system are the PCV valve, the filtered air inlet hose and the vacuum hoses connecting these elements to the engine and the EECS system.
3. To maintain idle speed, the PCV valve restricts flow when intake manifold vacuum is high. In the event of abnormal operating conditions, the system design provides for the possibility of returning escaping gases through the outlet pipe in the engine crankcase back to the air filter, from where they enter the engine and are consumed during fuel combustion.
4. Checking and replacing the forced ventilation valve and its filter is discussed in section 30 chapter 1.