Come in and help. 20 1 1 imported Mazda 3 2.0AT engine compartment has sharp and quiet noise.

800 kilometers should be a new car .. Go to a 4S shop and find a professional repairman. Anyway, it is free during the warranty period.

In addition, check whether the belt is installed correctly, and don't install the belt too tightly or too loosely. In addition, other belts for engines, generators and air conditioners. Check it too! See if the engine base is loose again! This is also one of the problems of abnormal engine noise. If there is nothing wrong with the belt, it is that the gasoline grade is too low and the engine explodes. Just replace the high-grade gasoline. When you say frustration,

Neither the throttle valve nor the throttle valve can be released too quickly, because the engine will have a reverse resistance. When the throttle is completely released in an instant, the output of the engine will decrease rapidly, and what you said will happen. The so-called engine braking when going downhill is also based on this principle.

Another problem is that the throttle is hard. This is actually a problem, but it is not a problem. How hard is it? New car. Generally, the reason why the throttle is hard is that the throttle is dirty. Clean the throttle for about 20000km. Yours is only over 800 kilometers. It's okay. This won't have much impact.

I have heard so much from you, mainly because of abnormal sound and frustration. In fact, the double clutch is normal and there will be no frustration. Besides, automatic transmission is bound to have setbacks.

There is another important thing. It is also a piece of advice. It's no use talking too much here. Only when you go to the repair shop and ask the master to show you what's going on can you solve the problem. What's the use of saying more now?

All right, stop it. Go and fix the car. If not, go to 4s ~

Hope to adopt ...