What is the reason for the sound of running water in front of the car when it starts?

The sound of running water in front of the vehicle is generally caused by the high installation position of the small water tank in the cooling system, and some air is not completely eliminated. The solution is to let the throttle go up and down when the vehicle is parked, and wait for the electronic fan to work several times. Open the cover of the water tank to exhaust, and be careful that the safe water temperature is not too high to avoid scalding.

The main job of automobile cooling system is to dissipate heat into the air to prevent the engine from overheating, but the cooling system has other important functions. Automobile engines work best at a suitable high temperature.

Although the gasoline engine has been greatly improved, its efficiency is still not high in the process of converting chemical energy into mechanical energy. Most of the energy in gasoline (about 70%) is converted into heat, and it is the task of automobile cooling system to dissipate this heat.