What are the causes of a damaged waste check valve?

[StErin]

The causes of a damaged waste check valve are: 1. Poor quality of the waste gas valve itself; 2. Improper maintenance; 3. Poor fuel quality; 4. Prolonged operation of the waste gas valve under high engine temperatures leading to aging. The effects of a damaged waste check valve are: 1. The waste gas check valve cannot control the amount of exhaust gas recirculation, leading to excessive exhaust gas participating in recirculation, which affects engine combustion; 2. It affects the ignition performance of the air-fuel mixture, thereby impacting the engine's power. The functions of the waste check valve are: 1. To direct the exhaust gas from the crankcase into the intake manifold, reducing the harmful gases emitted by the engine into the air; 2. To maintain the crankcase pressure below atmospheric pressure, reducing engine oil leakage; 3. To keep the crankcase ventilated and the engine oil fresh.