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How often should the external fuel filter be replaced?

1 Answers

Delaney

07/30/25 5:35am

The external fuel filter should be replaced every 20,000 to 30,000 kilometers. Fuel filters are divided into internal and external types, and due to different installation methods, their replacement cycles vary. The fuel filter employs a filtration method to remove impurities from gasoline, protecting components such as the fuel pump, fuel injector, cylinder liner, and piston rings, reducing mechanical wear, preventing fuel system blockages, ensuring stable engine operation, and enhancing vehicle safety. The consequences of not replacing the fuel filter include: 1. Failure to replace the fuel filter can lead to clogged fuel injectors due to impurities, resulting in reduced power; 2. Causing poor fuel flow and increased fuel consumption; 3. Making it difficult to filter impurities from gasoline, leading to incomplete combustion and carbon deposits; 4. Severe clogging of the fuel filter, making the car difficult or impossible to start.

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