Dongfeng Citroen Citroen cold car can't add gas.

The vaporization and combustion of gasoline need a certain temperature to be normal. In order to ensure this, cars can achieve "active combustion" by increasing the concentration of mixed gas, speeding up the engine speed or increasing the fuel supply under normal performance. And your car didn't do it or didn't do it well. It can be considered that there is air resistance in the oil circuit, the concentration of mixed gas is not in place, the nozzle is not smooth, the throttle valve is not clean, and there is more carbon deposition in the cylinder.