The car exhaust pipe is really a magical thing, young people are fascinated by its sound, while the old driver can use the exhaust pipe to judge the condition of the engine.
For example, when the fuel is not burned enough, the exhaust pipe will emit black smoke; when the vehicle burns the oil, the exhaust pipe will emit blue smoke and have a burnt smell; when the gasoline is mixed with water vapor or there is moisture in the cylinder, the exhaust pipe will emit "white smoke" and so on.
Although the dripping of exhaust gas reflects the performance of the car, it is not the more the better. On the one hand, too much water in the exhaust cylinder will damage the oxygen sensor in the three-way catalytic converter, resulting in inaccurate fuel supply to the engine and affecting the performance of the car. On the other hand, the long stay of water droplets in the exhaust pipe will also accelerate the corrosion of the pipeline.
If the exhaust pipe drips abnormally, there will be a milky white oil mist, and the dripping on the ground condenses into a block, then you may need to check whether the amount of water in the engine cooling tank has become less, it may be that the cooling water leaks into the combustion chamber and makes the combustion insufficient, which is the so-called poor fuel vaporization.
If the liquid from the exhaust pipe is black and accompanied by blue smoke, the oil is consumed quickly and the engine power is obviously insufficient. This situation indicates that the gap between the piston, cylinder liner and piston ring of the engine is too large to work properly, which requires going to the 4S shop for inspection and repair.