Generally, before buying a car, consumers will be diligent in doing all kinds of investigations in order to buy a car that suits them, such as checking the promotional materials of various car brands, consulting relatives and friends, shopping around, reading the opinions of riders online, etc. But after all, car owners are not car experts. After driving their beloved car home, even if they want to give it the best care, they are often unable to start, and sometimes even take care of it too much, thus making themselves fall into many misunderstandings in driving concepts.
1
Circle method has poor waxing effect
Many people habitually wax the car body in a circle, which is an incorrect method. The correct way of waxing is to perform it in a straight line, alternately with horizontal and vertical lines, and finally in the direction of rainwater flow, so as to achieve the effect of reducing the concentric circular halo on the surface of the car paint.
2
Too much oil is prone to failure
When the engine oil in the engine oil pan is insufficient, the friction between the bearing and the journal will cause poor lubrication due to the small amount of engine oil, which will aggravate the degree of wear and even cause the accident of burning the tile shaft. However, if there is too much oil, the crankshaft handle and the big end of the connecting rod will stir violently when the engine is working, which not only increases the internal power loss of the engine, but also increases the oil splashed on the cylinder wall, resulting in oil burning and discharging failure. Therefore, the oil in the engine oil pan should be controlled between the upper and lower score lines of the oil dipstick.
3
Permanent deformation of bolt over-tightening
There are many fasteners connected by bolts and nuts on automobiles. It should be ensured that they have enough pre-tightening force, but they should not be over-tightened. If it is too tightened, on the one hand, the connector will be permanently deformed under the action of external force; On the other hand, it will cause permanent tensile deformation of the bolt, and the pre-tightening force will decrease instead, even causing sliding buckle or breaking.
4
The fan belt is too tight and the bearing load is large
As the temperature rises, some drivers think that increasing the tightness of the fan belt can improve the cooling effect of the engine, so they keep increasing the tightness of the fan belt, causing the fan belt to be too tight, but they don’t know that this practice is wrong. The fan belt should be kept tight properly, because too tight will cause excessive load on the bearing, aggravate wear, and increase power consumption. At the same time, it will also cause the pump shaft to bend, stretch and deform the belt, and shorten the service life
5
New battery shortens life without charging
The first charge of the battery is called the initial charge, and the initial charge has a great impact on the service life of the battery. If you add “water” and use it directly without charging, the capacity of the battery will not be high and the life will be shortened; If charged directly, its life will also be shortened. Usually, the first charge of the battery is after filling the electrolyte, and it can be installed and used after charging it with a small current for about 1 hour.
6
Arbitrary addition of in-car equipment affects driving safety
Private cars are the mobile homes of car owners, and there is nothing wrong with pursuing passenger comfort. However, some car owners install various equipment in their cars themselves. If this modification is not handled properly, it will often bring adverse effects on the performance of the car, the convenience and reliability of operation, and easily leave sequelae or affect driving safety.
7
Ignoring the maintenance cycle table is troublesome
When every car owner buys a car, he will get a maintenance cycle table and be told when and what kind of maintenance to do. However, as long as most car owners feel good and there is nothing wrong with the car, they will gradually put it behind them, which will pose a great threat to safe driving; Another part of car owners shorten the maintenance mileage by themselves out of their past driving experience. For example, the regulation is 8,000 kilometers for maintenance, but they drive their cars to the 4 S shop at 6,000 kilometers, and go to the 4 S shop for maintenance before the maintenance time, resulting in more money.
In fact, the more frequent the vehicle maintenance is, the better. The mileage specified by the manufacturer is the best data set based on the full understanding of the vehicle body performance.
8
Heavy repairs without maintenance cost money and more troublesome
The use of automobiles is a typical “three points repair and seven points maintenance”. “Only driving, but not raising” has caused many car owners to have the phenomenon of “repairing instead of guarantee”. Some confuse repair and maintenance; Some only know how to enter the factory for maintenance, but they don’t know how to enter the factory for maintenance; Others think maintenance is a waste, etc. In this way, the vehicle will only be sent to the factory for maintenance when it is used to “lie down”, which will cause greater losses. In fact, there are many faults, and only timely maintenance can restore the technical condition and prolong the service life.
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