What is a PVC Valve?

1 Answers
OEden
07/30/25 2:40am
Car's PVC valve is a device in the forced ventilation system of the automobile engine's crankcase, composed of valve body, valve, valve cover, and spring. The following are the impacts of a faulty PVC valve on the vehicle: 1. The engine may shake during operation, with unstable idling, and a large amount of white smoke may emerge from the exhaust pipe. 2. Since it is located inside the crankcase, when it fails, it may cause internal corrosion, accelerate wear, and further shorten the engine's service life. 3. The engine may become difficult to start and exhibit poor acceleration. 4. Damage to the PVC valve can also lead to easy sedimentation and blockage of sludge. The blockage of sludge increases the pressure in the crankcase, causing oil and gas to flow back into the air filter, ultimately resulting in contamination and damage to the air filter.
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