The automobile fuel water separator is generally on the vacuum tube, and the function of the fuel water separator:
1. The fuel water separator is mainly based on the density difference between water and fuel oil, and uses the principle of gravity sedimentation to remove impurities and water. There are also separation elements such as diffusion cones and filters inside;
2. The fuel water separator also has other functions, such as pre-heating the fuel to prevent wax formation, filtering impurities, etc.;
3. It is a kind of fuel filter. Its main function is to remove the moisture in the diesel oil, so as to reduce the failure of the fuel injector and prolong the service life of the engine;
4. The fuel water separator can only separate the oil and water of the fuel oil, and separate the water in the oil, which has a certain effect on the engine to improve the burning oil.

If the fuel water separator is broken, the power of the car will be affected:
1. If the fuel water separator is broken, it will cause unstable or weak acceleration of the engine, or black smoke and other failures, and in severe cases, it will directly damage the engine;
2. The fuel water separator is used together with the dust collector. Its main function is to separate the water and oil in the gas, so it is called an fuel water separator. The principle is mainly based on the density difference between water and fuel oil, and the principle of gravity sedimentation is used to remove impurities;
3. Due to the fine workmanship of the fuel injector, its price is also relatively high, but if there is a problem with the fuel water separator, it must be replaced in time.