What symptom is Audi a6l waste gas valve broken?

The symptoms of Audi A6L waste gas valve failure in Pacific Auto Network are: idle jitter is high and low, and the exhaust emission light is on; The car body has a sense of shaking, and sometimes it can't be oiled; Loosen the oil cover, and you will feel great suction when you take it off. The waste gas valve, also known as oil separator and pressure control valve, is installed between the compressor outlet and the condenser inlet to improve the heat transfer effect in the condenser and evaporator through separation.

Causes of waste gas valve damage:

1, the quality problem of the waste gas valve itself;

2. Improper use and maintenance of waste gas valve;

3. The waste gas valve was suddenly damaged after the automobile accidentally added low-purity gasoline and fuel treasure.

4. When the engine is at high temperature, the wastegate valve works. After a long time, it will age like a valve cover pad and apron.

Influence of waste gas valve damage:

1. The function of the automobile exhaust valve is to recycle the automobile exhaust gas into the cylinder for combustion. After the waste gas valve is damaged, it is impossible to control the amount of waste gas circulation. Too much waste gas participates in the recycling, which will affect the ignition and performance of the mixture, thus affecting the dynamic performance of the engine, especially when the engine is idling, low speed, light load and cold engine, the recycled waste gas will obviously affect the engine performance.

2. The damaged waste gas valve will cause the car to burn engine oil, and the tail gas is blue smoke. The reason is that the waste gas valve is also equivalent to an oil-gas separator, which only absorbs waste gas and does not absorb oil during normal operation. The waste gas valve is damaged, and the oil-gas separation function is lost. At the same time, the engine oil is inhaled, which makes the engine oil enter the air inlet and combustion chamber, resulting in oil burning, and the tail gas is blue smoke. (Photo/Text/Photo: Pacific Auto Network Zhang Fengxue)