What are the symptoms of dirty throttle?

When the accelerator of a car is dirty, it will have the following symptoms: 1. The throttle is dirty, and the most obvious manifestation is that the throttle is stuck. The speed is slow, and the speed rises slowly when you step on the accelerator at idle speed. Release the throttle and the speed will drop immediately; 2. One of the most obvious problems that will directly affect the accuracy and smoothness of engine air intake is that it may cause jitter or even flameout if the idle speed and throttle speed are not smooth; 3. When the throttle valve is dirty enough to affect the engine work, it needs to be cleaned. At this time, the automatic air intake control of the driving computer is inaccurate, which may affect the work of the engine.