What are the effects of a faulty exhaust gas valve in a car?

1 Answers
LaMadeline
07/29/25 2:51am
The impacts of a damaged exhaust gas valve are as follows: 1. When the exhaust gas valve is damaged, it cannot control the amount of exhaust gas recirculation. Excessive exhaust gas participating in recirculation will affect the concentration of the air-fuel mixture. The car may experience difficulties in starting, engine shaking, unstable idle speed, weak acceleration, and other phenomena, affecting the engine's performance. 2. A damaged exhaust gas valve can cause the car to burn oil, resulting in blue smoke from the exhaust pipe. The exhaust gas valve serves the function of oil-gas separation. When working properly, it only draws in exhaust gas and not oil. If the valve is damaged, it loses its oil-gas separation capability, potentially sucking in oil along with the gas. This allows oil to enter the combustion chamber, leading to oil burning and blue smoke emission. The reasons for exhaust gas valve damage are as follows: 1. Poor quality of the exhaust gas valve itself. 2. Improper maintenance. 3. Poor fuel quality. 4. Aging of the exhaust gas valve.
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