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What are the effects of fuel filter replacement and non-replacement?

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Filter PL420 can't replace filters PL421

Filter PL420 can't replace filters PL421

In the past, the PL420 was used as the first primary filter for the fuel tank girders. There is no pressure. The common rail is pressurized, and the PL420 is under negative pressure. Before the appearance of the electronic pressure pump, the transparent cup is very safe, there is no pressure damage to the transparent cup, but with the advent of the electronic pressure pump, the engine's two coarse filters change from negative pressure to 4 positive pressures or even greater pressure. The old-fashioned PL420 transparent cup has the risk of oil leakage. Some OEMs changed the PL420 on the engine to the PL421 without a cup. However, some OEMs did not consider this problem. They still loaded the PL420. (There are now Delong) there are design risks. It is recommended to use the filter PL421 for models equipped with an electronic pump. Filters PL420 and PL421, we can provide, if you need, please feel free to contact us.

What are the effects of fuel filter replacement and non-replacement?
2019-05-31

What are the effects of fuel filter replacement and non-replacement?


Gasoline filtration is one of the common filter products, the main function is to remove impurities from gasoline. If the fuel filter is too dirty or blocked, the main performance is: when the fuel is added, the power is slower, or it can't get up, the car is difficult to start, sometimes it takes 2-5 times to catch the fire. Most engines are equipped with disposable, non-removable paper filter fuel filters. The replacement cycle is generally 10,000 kilometers. If you add less gasoline, it is not a problem to replace one with 15000-20000 kilometers. The filter has an inlet and outlet arrow mark, and should not be reversed when replacing.


The fuel filter is to filter the impurities in the gasoline you usually add. It takes a long time. Your fuel filter is full of dirt, dirt and dregs. Therefore, it is recommended to change the number of kilometers. If you don't change it, or delay the change, it will definitely affect the performance of your car; for example, the oil road is not smooth, the car is not motivated, the time is long, the filter performance of the steam filter is greatly reduced, and finally the engine is damaged chronically, and even the engine is overhauled. If you don't change it, it will definitely bring a lot of damage to the car.

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