What is the PCV valve recalled by Wuling?

[DeHarper]

Wuling recalled PCV valve is the engine crankcase forced ventilation system, installed between the engine crankcase ventilation system and the intake system, not a separate valve. PCV is the abbreviation of Positive Crankcase Ventilation, which means the active ventilation control system of the crankcase (or oil pan) in Chinese. The PCV valve consists of a valve body, valve, valve cover, and spring, and cannot be disassembled. The main function of the PCV valve: The main function of the PCV valve is to guide the gas in the crankcase into the intake manifold through the PCV valve, and a small amount of air enters the intake manifold directly from the air filter through the PCV valve. This avoids phenomena such as icing at the throttle, incomplete combustion, and deterioration of emissions. It prevents blow-by gas from entering the atmosphere and also prevents engine oil from deteriorating. Inspection method of the PCV valve: After reinstalling the PCV valve, remove the crankcase intake pipe from the air filter, and gently cover the pipe opening with a thin piece of paper. When the pressure in the crankcase decreases, the thin paper should be noticeably sucked toward the pipe opening. In addition, after stopping the engine, remove the PCV valve and shake it by hand to check. If a 'click' sound is heard, it indicates that the PCV valve is flexible and usable.