Skoda Haorui 1.6 Cold car starts to tremble and the fault light is on.

Hello! Reason why the engine warning light is on: 1. The poor quality of gasoline will lead to insufficient combustion of the mixture in the cylinder, which will lead to the warning light, and it is easy to produce carbon deposition. 2. The existence of carbon deposits at the air inlet and the top of the piston will lead to poor atomization, resulting in insufficient combustion and warning lights. 3. When the cold car starts, especially when the weather temperature drops sharply, the alarm light will light up due to the temperature correction problem of the computer, but as long as the temperature drops to a certain temperature and there is no fluctuation, it will be relatively stable. 4. If the mileage of the engine is too long, the working characteristics of the spark plug will be weakened, leading to the lighting of the alarm lamp. 5. Excessive carbon deposition will lead to the reverse breakdown of the ignition coil, which will lead to the failure of the ignition coil, which will lead to poor ignition and incomplete combustion, which will lead to the lighting of the alarm lamp. A notable feature of this phenomenon is that when the ignition coil fails, the engine always shakes violently. If it is not shaken violently all the time, the ignition coil can be basically eliminated. 6. Over-age and mechanical aging of vehicles lead to poor engine working conditions, poor combustion and ignition, and warning lights are on. 7. The failure of some sensor computer boards led to the warning lights. There are many reasons why the alarm light is on, but the first three are the most. Special attention: When the warning light is on, the engine will not shake or slightly shake. At this time,