Is it normal for water to appear under the exhaust pipe after parking a car?

[RyderFitz]

It is normal for water to appear under the exhaust pipe after parking a car. This indicates that the gasoline has been completely burned inside the engine during the vehicle's operation. For water to drip from the exhaust pipe after parking, the following three conditions must be met: 1. The air-fuel mixture ratio is within the normal range. 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. Normal cylinder pressure indicates that there is no significant wear inside the engine cylinder, or the wear is negligible, and components such as the cylinder liner and sealing rings are intact. If the engine has severe internal wear, incomplete combustion of gasoline will occur, preventing water from dripping. 3. The exhaust temperature is normal. Generally, most of the heat generated by the engine remains in the cylinders, with only a small portion entering the exhaust pipe. In this case, the engine's power output is stable. If the exhaust pipe temperature is too high, the water vapor will evaporate.