How often should the air filter of a car be replaced? Can a dirty filter screen still be used after being blown on? It should be known that there are four filters in the car, namely the air filter, the air conditioning filter, the oil filter and the fuel filter. Here, the ones that can continue to be blown mainly refer to air filters and air conditioning filters.
Although these two service targets are different, their main purpose is to filter dust in the air. When dust accumulates to a certain extent, the intake resistance will be very high. However, some car owners think that there is still a bit to save. That is, the old air filter element only looks like it is covered with a layer of dust, and it will disappear after being sprayed with an air gun.
I went back and used it. It felt great. But the mechanic told us that we mustn't do this, or the engine will have to undergo major repairs sooner or later. Why do you say so? First of all, the air filter element is used to filter out dust and particles in the air, keeping them out and preventing the engine from inhaling them.
The dust on the air filter was blown off with an air gun, but it was also blown off, greatly reducing or even eliminating its purification capacity. Dust and particles in the space being sucked into the engine will directly lead to a decrease in engine power and accelerate the wear of parts. If this situation persists for a long time, the engine will eventually need a major overhaul.
Therefore, it is recommended that the air filter be replaced directly after expiration and not be used any longer. It will cause the pores of the filter element to become larger or even break. If the method is incorrect, it will indeed blow out the filter element, causing it to break or the edges to come apart. Even without obvious damage, it will cause the pores of the filter element to become larger. If this type of filter element is used, particles will pass through the pores.
It's just like wearing a mask to prevent a cold, but if your mask is torn or you didn't clip it properly and it's still exposed, it's no different from not wearing it at all. The high-pressure air gun blows the filter element, resulting in a decrease in filtration efficiency. In some experiments, I saw how they did it. If a high-pressure air gun was directly used to blow at a certain filter element, the filtration efficiency of the filter element would drop significantly after blowing compared to before.
The particulate matter passing through the filter element will increase by 54%, which is 175% higher than that of the new filter element. On the surface, it seems that the air has been blown clean, but in fact, even the tiny pores have been enlarged. It's better not to blow at all. We measure the quality of the air filter. The key points to look at are its air permeability and filtration effect. The quality of air permeability directly affects whether the engine burns fully.
If the air permeability is poor, it is very easy to form carbon deposits. It will affect the performance of other unused engines. The quality of the filtration effect directly affects the amount of impurities in the engine combustion chamber. It will directly affect the service life of the engine. Based on the above factors, specific problems should be analyzed specifically and discussed in detail.
Or you can get a new one. It depends on your own situation. Don't blindly trust others. Don't blindly follow the advice of repair shops. Few people don't want to make money when a repair shop opens. After the car filter has been driven for 5,000 kilometers, if it is not particularly dirty, it can still be used. You can also use a brush or strike it with a hard object to remove the floating dust on it.
Try not to use a high-pressure air gun to blow from the reverse side, as this will make the original gap larger. If you need to blow air, keep the air gun at a distance from the filter screen so that the floating dust on it can be blown away. In fact, air filters are relatively easy to purchase nowadays and their prices are not very high. It is recommended to replace it as much as possible. It won't save a lot of money, nor will it cost a lot.
The air intake is unobstructed, ensuring continuous air quality and extending the vehicle's service life. Fuel economy will also be significantly improved. The function of the air filter element: It is to filter out dust in the air and ensure that the air entering the engine is free of "impurities"! Its quality requirements are extremely high. It is necessary to effectively filter impurities while ensuring good air intake.
Therefore, it is essential to use filter elements from regular manufacturers that meet the standards.
Qinghe County Dongsen Auto Parts Co., Ltd. is located in Qinghe County, Xingtai City, Hebei Province. It was established in 2024. Although the company was established a short time ago, it has more than 10 years of production experience. We are a manufacturer specializing in the production of air filters, air conditioning filters and oil filters. The filters produced by our factory serve the domestic and foreign markets and have won unanimous praise from customers in Southeast Asia, Africa, South America and other regions.
