How to clean the throttle valve of Big Dipper 1.0?

It may be because the fuel constant pressure performance of the vehicle's electronic control system is poor, and the fuel pressure is low, which leads to poor fuel injection atomization and difficult starting. Parking time is long, I suggest you try before starting. Open the key door until the instrument light is completely on and the sound of the oil pump is heard. After the sound is over, close the key door, and then repeat the above operation until the sound of the oil pump can hardly be heard. Then start over and you should be able to hit it once. Also pay attention to the fault phenomenon caused by excessive carbon deposition in the engine. Recently, the weather is very cold, and too much carbon deposits lead to too thin mixture, which makes it difficult to start.