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4 Forhibiden Activities In Vehicle Maintenance

Nov 12, 2021


First, do not apply oil to the tire bolts and nuts. In wheel maintenance, in order to prevent the bolts and nuts on the wheel from rusting, a few private car owners apply lubricating oil to the bolts and nuts during installation. However, this practice is not only wrong, but also brings certain hidden dangers to driving safety. After the bolt and nut are tightened, they have self-locking characteristics with each other. When the lubricant is applied, the self-locking coefficient between them changes and the self-locking performance decreases. When the car is running at high speed, the bolts and nuts are easy to loosen or even fall off, resulting in driving accidents.

Second, do not flush the interior of the body with water. It is common for private car owners to wash the car body with water and wipe it with a rag. Here, we should remind private car owners that the interior Zui of the car body should not be washed directly with water. Because the bottom of the floor rubber pad in the cab is not "flat", there are many grooves and through holes under the floor rubber pad in the cab due to structural needs. After washing with water, it either deposits in the groove and is not easy to dry, or flows from the through hole to the gearbox and other components to produce corrosion. The correct method is to wipe it with a wet rag.

Third, do not mix different brands of coolant. Because the chemical properties of different brands of coolants may vary greatly, such as the effective preservative for ferrous metals, but it often has a corrosive effect on aluminum products; Preservatives suitable for aluminum alloys are harmful to ferroalloys. Since different brands of coolant use different preservatives, they cannot be mixed.

Fourth, do not step on the accelerator when starting the EFI vehicle. The engine equipped with electronic fuel injection device is different from the ordinary carburetor engine. Its fuel injection control device can automatically adjust the fuel supply according to the engine temperature and working conditions, so as to make the engine start smoothly, that is, when the cold vehicle starts, the fuel injection control device can automatically increase the fuel supply. Therefore, when starting the engine of EFI car, it is not necessary to step on the accelerator, let alone continuously step on it before starting, otherwise the engine will start poorly.