The engine sound of afr 125 is high and low.

The solutions to idle noise of afr 125 engine are as follows:

1。 Driving on the highway for a period of time under the condition of ensuring safety, often driving at a low speed, stopping and stopping on the urban roads for a long time, and the engine is not fully released, which is easy to produce carbon deposition and will lead to loud noise. Therefore, if you often drive in the city, you should take time out to run the expressway.

2. Maintain the engine. When you refuel, you can add something from fuel treasure, which can effectively remove carbon deposits. After all, the oil products in our country need to be improved, so the engine should be well maintained.

To change the oil, you should maintain the car regularly and on time. Even if the mileage is not reached, let the old engine oil out, because the engine oil will oxidize. After a long time, its indexes will drop, the engine will not be properly protected, and it will also produce noise. Therefore, you should change the oil in time.

4. Clean the throttle valve. If the car is driven for a long time, the throttle will hide evil and shelter evil people. So the engine noise is really too high, probably because the throttle is dirty. It will be much better after cleaning in a professional repair shop.