How Many Kilometers Should You Drive Before Replacing the Fuel Filter?
2 Answers
How many kilometers you should drive before replacing the fuel filter depends on the situation: 1. External fuel filter: The fuel filter can be replaced after driving about 20,000 kilometers; 2. Built-in fuel filter: Replace it once after driving about 40,000 kilometers. The replacement cycle of the fuel filter will vary slightly depending on the usage of the car. The full name of the fuel filter is the gasoline filter, and its main function is to filter impurities in gasoline so that it can burn more fully. Gasoline filters are divided into carburetor type and fuel injection type. The carburetor type gasoline filter is installed at the inlet end of the fuel pump, with low working pressure and a nylon shell. The fuel injection type gasoline filter is installed at the outlet end of the fuel pump, with high working pressure and a metal shell.
Last time I went for maintenance, the mechanic specifically reminded me about the fuel filter. There's quite a difference between cars. German cars like Volkswagen usually require replacement every 30,000 kilometers, while Japanese cars like Toyota and Honda are more durable, with manuals suggesting replacement at 60,000 to 80,000 kilometers. If you frequently refuel at small gas stations or often drive on sandy or dirt roads, the filter gets clogged faster, and the fuel pump starts 'groaning' by 20,000 kilometers. The other day, an old Mercedes that hadn't changed its filter in just 50,000 kilometers had half a cup of sediment cleaned out from the fuel tank, nearly ruining the high-pressure pump. So don't just look at the mileage; if you notice hesitation when accelerating or difficulty starting the engine cold, it's time to check the filter.
