How often does Toyota's fuel system need maintenance?

The engine fuel system needs cleaning and maintenance, and there are two main cleaning methods: one is to directly add the "cleaning agent" into the fuel tank according to a certain proportion and carry out internal circulation cleaning under the normal running state of the automobile; Another way is to clean the engine with special equipment at idle speed, and finally discharge the decomposed carbon colloid with the exhaust gas. After cleaning, replace the fuel filter in time. The maintenance master of the car-raising car Shinkansen introduced that the car should be cleaned and maintained every 10,000 kilometers.

After the engine water tank is used repeatedly, a thick and hard scale will form on the inner wall. When the scale is deposited to a certain extent, the volume of the water tank will become smaller and the circulation of cooling water will be affected. Due to the poor thermal conductivity of the scale layer, the lubrication conditions of the engine will be deteriorated, the parts will be overheated, the normal working gap between the linked parts will not be maintained, and the mechanical properties will be deteriorated, thus reducing the engine power, increasing fuel consumption and even affecting the working life. Therefore, it is very necessary to clean the engine cooling system after running for a period of time.

This cleaning and maintenance can play the role of descaling, derusting, rust prevention and acid prevention, and the descaling rate can reach above 85%. The operation is simple: just add the "cleaning agent" to the water tank and clean it under the normal driving condition of the car. After several hours, drain the waste water in the water tank and add new cooling liquid or non-freezing liquid again. Such cleaning and maintenance should be carried out at least twice a year.