How many kilometers should the PCV valve be replaced?

[VonElle]

Replace the PCV valve at 120,000 kilometers. Main function: It directs the gases from the crankcase into the intake manifold through the PCV valve, with a small amount of air entering the intake manifold directly from the air filter via the PCV valve. This prevents phenomena such as icing at the throttle, incomplete combustion, and worsened emissions. Symptoms of a faulty PCV valve in the engine: 1. Engine shaking, unstable idle, and a large amount of white smoke from the exhaust pipe. 2. It may cause oil to remain in the crankcase, leading to corrosion, accelerated wear, and shortened engine life. 3. It can also cause difficulties in starting the engine, idle shaking, lack of power during acceleration, and excessive oil consumption. 4. It is prone to sludge deposits and clogging, which increases the pressure inside the crankcase, causing oil vapors and exhaust gases to flow back into the air filter and contaminate the air filter element.