How often should the gasoline filter be replaced?
2 Answers
The gasoline filter is recommended to be replaced every 20,000 kilometers. The function of the gasoline filter is to remove water and impurities from the gasoline. When the engine is running, fuel flows into the sediment cup of the filter through the inlet pipe under the action of the fuel pump. Due to the increased volume and reduced flow velocity, water and impurity particles heavier than oil settle at the bottom of the cup, while lighter impurities flow with the fuel toward the filter element. Symptoms of a dirty or clogged gasoline filter include: 1. Slow response when accelerating; 2. Difficulty starting the car; 3. Needing 2 to 5 attempts to start the engine. Gasoline filters generally use microporous paper filter elements, treated with phenolic resin and formed into a folded cylindrical shape. They offer advantages such as good flow performance, high filtration efficiency, simple structure, low cost, and easy maintenance.
When I first started driving, I often neglected the fuel filter, which resulted in severe engine shaking and high fuel consumption. Later, I learned that it's best to replace it every 30,000 kilometers, but adjustments should be made based on actual conditions. For example, in cities with heavy traffic and lots of dust, checking it at 25,000 kilometers is safer. My current habit is to check it during every maintenance service, which saves both money and hassle. If you notice slow refueling or difficulty starting the engine, the filter might be clogged and needs immediate attention—otherwise, prolonged neglect can damage the fuel pump, leading to costly repairs. Paying attention to fuel quality and regular maintenance can extend your car's lifespan and make driving much smoother. Remember, timely replacement is a small action with big benefits.
