There are always some minor problems in the life of the car, and car repair is a technical activity. There are many places that need attention in the maintenance process. However, some car owners prefer to handle it first when the car is in trouble, but it is not professional. The maintenance personnel will often use some erroneous maintenance methods to deal with their own cars during the repair process. This often leads to injury and injury to their own cars. The following editors introduce some common car repair errors.
Do not oil tire bolts and nuts
In wheel maintenance, a small number of private owners in order to prevent rusty bolts and nuts on the wheel, install the ingenious to apply the lubricant to the bolts and nuts, not knowing that this approach is not only wrong, but also brings some hidden dangers to traffic safety. After bolts and nuts are tightened, they have self-locking characteristics. When the lubricant is applied, the self-locking coefficient between the two becomes smaller and the self-locking performance decreases. When the car is driving at a high speed, bolts and nuts are easily loosened or even dropped off, causing an accident.
Do not rinse body with water
When the summer arrives, common private car owners wash their bodies with water while wiping them with a rag. It is necessary to remind private car owners that the interior of the car body should not be flushed directly with water. Because the underside of the floor rubber pad in the cab is not "a flat surface," the structural requirements make the underside of the cab floor pad have many recesses and through holes. After rinsing with water, it is either deposited in the groove and is not easily dried, or flows from the through hole to parts such as the transmission to cause corrosion. In particular, cars with better sealing performance cannot wash the interior of the vehicle directly with water. The correct method is to wipe with a wet cloth, but to avoid accumulation of water.
Do not mix different brands of coolant
Everyone knows that the lack of engine coolant should be added in time, but do you use different brands of coolant together? If so, advise you to release the coolant as soon as possible and re-add the same brand of coolant. Because different brands of coolants may have very different chemical properties, such as antiseptics that are effective against ferrous metals, they are often corrosive to aluminum products; while the preservatives that are suitable for Altai Gold are harmful to ferroalloys. Because different brands of coolants use different preservatives, they cannot be mixed.
Do not step on the accelerator when the EFI car starts
It is the habit of many drivers to step on the throttle before starting the engine, especially when the cold car starts in winter. However, this starting method does not apply to EFI cars. The engine equipped with an electronically controlled fuel injection device is different from an ordinary carburetor type engine. Its fuel injection control device can automatically adjust the fuel supply according to the temperature and operating conditions of the engine so that the engine can be started smoothly, that is, when the cold car starts. The fuel injection control device can automatically increase the fuel supply. Therefore, when the engine of the EFI sedan is started, there is no need to step on the accelerator, and it is even more urgent not to step on the engine before starting the engine. Otherwise, the engine start is not good.
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