What is the phenomenon of electronic throttle failure?

The fault of the throttle valve is that the cylinder is not airtight, there is a mixture leakage phenomenon, the pressure in the cylinder is not enough, and it is difficult to ignite. In this case, even if high-voltage electricity exists, the in-cylinder pressure and the compression temperature of the mixed gas still cannot meet the ignition conditions. In severe cases, the refrigerator can't keep up. There are three faults in the electronic throttle: 1, the engine can't start or idle, the power is unstable, and the speed is unstable; 2. The engine speed is unchanged and cannot be controlled, and the fault indicator light is on; 3. The car accelerates slowly.