What are the symptoms of dirty throttle?

When a car refuels, the following symptoms may appear: the throttle is stuck, it feels heavy and slow, and the speed of stepping on the throttle rises slowly and the response is slow when idling. And release the accelerator when driving, and the speed will drop immediately. This is often because the throttle is not clean, which affects the accuracy and smoothness of engine intake. And the most obvious problem is that it may cause jitter or even flameout when idling. At the same time, if the fuel valve does not accelerate smoothly, it is also because the throttle valve is dirty. If the accelerator of the car is dirty, it will have the following symptoms: 1. The throttle is stuck heavily, the speed increases slowly, and the reaction of stepping on the throttle at idle speed is slow. Once the throttle is released, the speed will decrease immediately; 2. At the same time, it will affect the accuracy and smoothness of engine air intake. One of the most obvious problems is that it may lead to idling jitter and flameout, and the growth rate of the fuel filler door is not smooth; 3. When the throttle is dirty to a certain extent, it has already affected the work of the engine. At this time, the self-regulating air intake of the driving computer may be inaccurate, and the work of the engine may be affected. Therefore, it is necessary to clean the throttle valve in time.