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What's the matter with the water dripping from the car muffler

2023-02-28

Water dripping from the car muffler is a normal phenomenon, which is a sign of sufficient fuel combustion in the car, because after the gasoline is completely burned, water vapor and carbon dioxide will be generated. When the ambient temperature is low, the white smoke from the exhaust pipe is water vapor. When the water vapor As it flows through the metal pipe, it condenses into water droplets, which flow out through the small holes in the muffler.

After gasoline is burned, it mainly produces carbon dioxide, water and a small amount of carbon monoxide, and after every kilogram of gasoline is mixed with air, about 1.42 kilograms of water will be produced, and it will be mainly discharged into the atmosphere in the form of vapor . Because of the general design, the main muffler is placed at the rear of the car, and the temperature in it is relatively low, and the inside is basically a multi-chamber structure, which is very easy to form water accumulation. When the engine is running at high speed, The accumulated water inside will be discharged under the action of airflow, which is a common phenomenon of dripping water. Moreover, for vehicles that often travel at low speeds on congested roads, especially in winter, the phenomenon of water accumulation in the muffler will be more serious.

Engine dripping is generally normal, but there are exceptions: If the cooling water tank in the engine leaks and the cooling water flows into the combustion chamber, it can also cause the exhaust pipe to drip. If you feel that your car is dripping abnormally, just check to see if there is any water leakage in the cooling water tank in the engine compartment. In addition, if the exhaust gas is milky white oil mist, which will solidify and agglomerate when dropped on the ground, it is likely that the fuel vaporization is poor. The main reason is that the temperature is too low and the fuel atomization is poor. It usually disappears as the engine temperature rises after the engine is started.