If there are large sand particles, dust, etc. in some areas, the usage time will be shorter, and if necessary, they should be replaced every time they are serviced. In cities with relatively clean air, the replacement cycle can be appropriately extended. The function of the air filter element is very simple, simply a device that filters out particulate impurities in the air. Because the engine requires a large amount of intake air during operation, By filtering the effect of the air filter, it will "be condemned for inhaling particulate matter in the air filter, after entering the air inlet (or) A combustion cylinder mixed with gasoline. If the air filter does not filter, larger particles burn in the air entering the engine, and the passage of time can lead to various errors, a typical malfunctioning cylinder. The engine absorbs a large amount of air during operation. If the air is not filtered clean, the dust in the air will be sucked into the cylinder, which will accelerate the wear of the piston and cylinder. Larger particles enter between the piston and cylinder, causing severe cylinder pulling, especially under dry, sandy working conditions. The air filter is installed in the front of the carburetor or intake pipe to filter out dust and sand particles in the air, ensuring that the air in the cylinder is sufficient and clean.

An air filter that can be used on vehicles traveling more than 30000 kilometers on highways before being replaced; For an SUV that shuttles between villages, it can be replaced within two months. Of course, these two situations are extreme, and it is advisable to replace the air filter every year or every 2 kilometers for the average urban vehicle. Of course, the time or distance the vehicle travels is only a reference, ultimately determining whether the air filter needs to be replaced: whether the air filter cannot pass. The air filter is designed to remove impurities from the air and allow sufficient air to enter the engine. It is important to note that air filters that have been operating for some time are actually more efficient than new air filters. This is because the impurities that the air filter has absorbed help it capture more tiny dust. Eventually, the air filter can accumulate excessive dust, affecting engine operation. The fuel economy, power performance, and emissions of a car often deteriorate before you replace it with a new air filter. Note that a seemingly dirty air filter does not mean it is no longer working properly, so whether it needs to be replaced depends on the condition of the vehicle.