[Basic knowledge of car]Misunderstandings of car maintenance

1.Don't be likeTiresBolt and nut oiled

In the wheel repair, a few private car owners ingeniously painted all the bolts and nuts in order to prevent the bolts and nuts on the wheels from rusting.Lubricating oil, I don’t know that this approach is not only wrong, but alsoseat beltThere are certain hidden dangers.

After the bolts and nuts are tightened, they have self-locking characteristics. After applying lubricating oil, the self-locking coefficient between the two becomes smaller and the self-locking performance decreases.InCarWhen driving at high speed, the bolts and nuts are easy to loosen or even fall off, which can cause driving accidents.

2.Do not wash the interior of the car with water

In summer, it is common for private car owners to wash the body with water while wiping with a rag. Here is a reminder to private car owners that it is best not to wash the inside of the body with water.

Because the underside of the floor rubber pad in the cab is not a "horizontal river", the structural requirements make the grooves and through holes under the floor rubber pad of the cab very many. After rinsing 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 parts to cause rust. In particular, cars with better sealing performance cannot directly wash the interior of the car body with water. The correct method is to wipe with a damp cloth, but avoid stagnant water.

3.Do not mix different brands of coolants

Everyone knows that the engine coolant should be added in time when the engine coolant is insufficient, but have you used different brands of coolant together? If so, I advise you to drain the coolant as soon as possible and add the coolant of the same brand again.

This is because the chemical properties of different brands of coolants may differ greatly. For example, anticorrosives that are effective for ferrous metals often have corrosive effects on aluminum products; while antiseptics suitable for aluminum alloys are harmful to ferroalloys. Since different brands of coolant use different preservatives, they cannot be mixed.

4.Don't step on the accelerator when the EFI car starts

It is a habit of many drivers to step on the accelerator before starting the engine, especially when the car is started in cold winter. But this starting method is not suitable for EFI cars.

Engines equipped with electronically controlled fuel injectionCarburetorDifferent from the type of engine, its fuel injection control device can automatically adjust the fuel supply according to the temperature and working conditions of the engine, so that the engine starts smoothly, that is, when the cold car starts, the fuel injection control device can automatically increase the fuel supply. Therefore, there is no need to step on the accelerator when starting the engine of an EFI car, let alone step on the accelerator continuously before starting, otherwise the engine will start badly.

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