Yun Qi hot car stops after driving, what should I do if the idle speed is low?

The problem of low idle speed of hot cars may be mainly caused by excessive carbon deposition in throttle, idle motor, air intake, air intake valve and combustion chamber. Due to too much carbon and dirt deposited in the air inlet, the cross-sectional area of the air passage changes, which makes the control unit unable to accurately control the idle intake air volume, resulting in too rich or too lean mixture, abnormal combustion after starting or too low engine. Mainly use an endoscope to check whether there is too much carbon deposit in the air inlet, intake valve and combustion chamber. At the same time, check the working state of the fuel nozzle, because if the fuel nozzle leaks slightly, the fuel will leak from the fuel nozzle to the combustion chamber after flameout, and if it is evaporated and adsorbed on the carbon deposit in the combustion chamber, the idle speed will be too low when restarting. I suggest you make a field trip based on the above analysis.