Nowadays, the quality of gasoline is good and bad. After gasoline vehicles have been used for a period of time, it is inevitable that there are various impurities in the fuel tank, which makes the filter in the fuel supply system gradually unable to bear. More and more precipitated impurities in the fuel tank will inevitably enter the engine with the fuel supply system in the vehicle. Over a long period of time, it will cause damage to the vehicle. Now let's see how to clean the oil tank!

1、為什么要清洗油箱？

1. Why clean the tank?

雖然油箱除了在加油的時候處于半封閉狀態，其他時候都是全封閉的。但是隨著車子的年齡增加，使用時間變長，油箱內的沉淀雜質會越來越多。本身油內也是會有雜質，各加油站油庫底部長時間也會積累不少雜質。這些雜質在進到油箱之后，先沉淀到油箱底部。慢慢所沉淀物太多之時，也會隨燃油進到汽車發動機之內，對汽車發動機會導致非常嚴重磨損。

Although the fuel tank is in a semi closed state except when refueling, it is totally closed at other times. However, with the increase of the age of the car and the use time, more and more impurities will precipitate in the fuel tank. There will also be impurities in the oil itself, and a lot of impurities will accumulate at the bottom of oil depots of gas stations for a long time. After entering the tank, these impurities precipitate to the bottom of the tank. Slowly, when the sediment is too much, it will also enter the car engine with the fuel, which will cause very serious wear to the car engine.

2、什么時候該清洗？

2. When should it be cleaned?

油箱本身也是有采取保護措施，可防水還保溫。假如長久怠速行駛，或許在3萬公里之時，你就要對汽車進行油路清洗。又或更換濾清。否則一經碰到油路被堵塞，油箱氣壓太高。汽車所行駛過程當中，也會有甩動狀況。高壓之下，油箱易開裂，比較嚴重之時也會有漏油狀況，油耗也會變得非常高！

The oil tank itself is also protected from water and heat. If you drive at idle speed for a long time, you may have to clean the oil circuit of your car at 30000 km. Or change the filter. Otherwise, once the oil circuit is blocked, the air pressure in the oil tank will be too high. During the driving process, the car will also swing. Under high pressure, the oil tank is easy to crack. When it is more serious, there will be oil leakage, and the fuel consumption will become very high!

3、如何清洗？

3. How to clean?

油箱清洗分為兩步，內部和外部。

Tank cleaning is divided into two steps, internal and external.

外部：清潔檢查油箱外部，檢查油箱、油管、接頭有無凹癟和滲漏，并擰緊油箱支架固定螺栓。如果發現有凹癟和滲漏現象，應拆下損壞部件進行修理。

Exterior: clean and check the exterior of the oil tank, check the oil tank, oil pipe and joint for concave and leakage, and tighten the fixing bolts of the oil tank bracket. If concave and leakage are found, the damaged parts should be removed for repair.

內部：打開燃油箱口，取出濾網筒，吸出燃油箱內部分燃油，箱內留有約30L左右的燃油。

Inside: open the fuel tank port, take out the filter cartridge, suck out part of the fuel in the fuel tank, and there is about 30L fuel left in the tank.

將清洗干凈的壓縮空氣管(更好是塑料管)從加油管口插入油箱底部，用氣壓吹動燃油箱底部的燃油，使之翻騰而進行清洗。清洗時，可用干凈的布塊稍微堵住插入油管的加油管口，并不斷變換氣管下端的位置和方向。

Insert the cleaned compressed air pipe (preferably plastic pipe) into the bottom of the fuel tank from the filling pipe orifice, and blow the fuel at the bottom of the fuel tank with air pressure to make it churn and clean. When cleaning, a clean cloth can be used to slightly block the oil filling pipe orifice inserted into the oil pipe, and the position and direction of the lower end of the gas pipe can be changed continuously.

吹洗20分鐘后，立即放出油箱內的燃油，使懸浮在油中的雜質隨燃油一起流出。如果流出的燃油較臟，應以上述的方法再清洗一遍油箱。

After 20 minutes of purging, drain the fuel in the tank immediately, so that the impurities suspended in the oil flow out with the fuel. If the outflow fuel is dirty, clean the fuel tank again in the above way.

裝復并擰緊放油螺塞。將加油管口的濾網筒清洗干凈，裝入加油口管內。向油箱內加入清潔的燃油，蓋好油箱蓋，并將油箱外部擦拭干凈。要注意，從油箱內放出的燃油應經過72小時的沉淀后，才能使用。

Replace and tighten the drain plug. Clean the filter cartridge of the oil filling pipe and put it into the oil filling pipe. Add clean fuel into the tank, cover the tank cap, and wipe the outside of the tank clean. Finally, it should be noted that the fuel discharged from the fuel tank can only be used after 72 hours of precipitation.