Why is there water dripping from the exhaust pipe when parking?

[DiEllie]

Finding water dripping from the exhaust pipe when parking is a normal phenomenon, indicating that the engine is working properly with complete combustion and good atomization effect. There is a small hole at the bottom of each exhaust pipe designed to facilitate drainage under normal conditions or special circumstances like wading through water. The conditions for water dripping from the exhaust pipe after parking are: 1. The air-fuel mixture ratio must meet the normal value. Whether the engine is fuel-injected or carbureted, a normal air-fuel mixture ratio means the vehicle's fuel supply system is functioning properly, and fuel consumption will be within the normal range; 2. The engine cylinder pressure is normal, meaning there is no significant wear inside the engine cylinder, and components like cylinder liners and sealing rings are intact. If there is severe internal wear, gasoline will not burn completely, and no water dripping will occur; 3. The exhaust temperature is normal. Most of the heat generated by the engine stays in the cylinders, with only a small amount reaching the exhaust pipe. In this case, the engine's power output is relatively stable. If the exhaust pipe temperature is too high, the water vapor will evaporate.