Common sense and precautions of car maintenance in 13 winters

Common sense and precautions for car maintenance in 13 winters

I. Heating system

Whether the heating system can work normally is undoubtedly very important in winter. Although the structure of the heating system is simpler than that of the air conditioning system, it will also fail after being stopped for one summer.

Therefore, before winter, try out whether there is hot air in the heating system, whether there is abnormal noise in the operation of the fan and whether the air duct is unobstructed.

sometimes, the antifreeze in the warm air water pipe does not flow for a long time, and the circulation pipeline is blocked by condensation. Although it does not affect the driving, it is very troublesome to maintain. If there is a problem, you must go to the 4S shop or repair shop in time to repair it.

second, the cooling system

antifreeze must be used in winter, especially in the north, where the temperature is below zero most of the time. If the cooling system of the engine is ordinary water, it is easy to form ice, which is not conducive to the start of the car, and it will almost cause serious damage to the engine. According to statistics, the failure of the cooling system is the number one killer of engine failures, accounting for about 6% of the total number of engine failures! Therefore, the use of antifreeze in winter can effectively curb the occurrence of freezing events in the cooling system. So don't forget to check the antifreeze in winter.

generally speaking, it is recommended that antifreeze be changed every two years. However, if you have ever added ordinary water to antifreeze, the replacement cycle of antifreeze should be earlier, and pay attention to the color of antifreeze when replacing. Different colors cannot be mixed.

as far as the choice of antifreeze is concerned, the lower the freezing point, the stronger the antifreeze will be. At present, the freezing point of antifreeze in the market has several specifications, such as-15℃,-25℃,-3℃ and-4℃, and the selected freezing point should be more than 1℃ lower than the lowest temperature in the region.

Third, the hot car

Wait in the same place after ignition (the waiting time depends on the relatively stable time after the speed drops, generally not more than one minute). For example, when the vehicle just landed, the rotation speed was above 2 rpm. After about 3 seconds to 1 minute, the pointer of the engine tachometer dropped to about 12 rpm (but it has not dropped to the normal idle speed of 8 ~ 1 rpm at this time), and it has basically stabilized without obvious fluctuation. < P > The vehicle body has no obvious jitter. In this case, you can start in gear. Keep the rotation speed within 2 rpm and drive slowly (without affecting the normal running of other vehicles), and you can drive normally when the water temperature reaches nearly 6℃ or above (more than one third of the water thermometer of a general car).

iv. water spraying system

even though the usage of wiper water spraying system will be obviously reduced in winter, it can't be ignored, especially in the northern region.

like antifreeze, although it can be replaced by clean water and washing water in summer, these substitutes may freeze in winter, so they should not be used in winter. In the environment below zero degrees Celsius in winter, the frost-resistant winter glass water should be replaced, or an appropriate proportion of alcohol can be added to the glass water to achieve the purpose of lowering the freezing point and freezing resistance.

V. Inspection of vehicle lights

In winter, the working state of vehicle lights should be comprehensively inspected, and the blackened light bulbs should be replaced as soon as possible. Fog lights, brake lights and turn signals should be checked by themselves. In winter, the visibility is low in foggy morning, and there are many rear-end accidents, so whether fog lights and high-position brake lights work normally is also the guarantee of driving safety in winter.

VI. Power supply system

Here we mainly talk about batteries. Battery is very sensitive to low temperature. The capacity of battery in low temperature environment is much lower than that at normal temperature. Although the existing batteries are maintenance-free, there is no need to replenish the electrolyte of the battery and adjust the proportion of the electrolyte.

However, before the cold season comes, the terminals of the battery should also be cleaned and coated with special grease for protection, so as to ensure reliable starting and prolong the battery life. If the vehicle is parked in the open air or garage for several weeks, the battery should be removed and stored in a warmer room to prevent the battery from being damaged.

VII. Tire

Rubber will become hard and relatively brittle due to the decrease of air temperature, and the friction coefficient will decrease. In winter, the tire pressure should not be too high, but not too low.

The external temperature is low, the tire pressure is too low, and the serious soft tire can accelerate the aging. In winter, it is necessary to clean up the inclusions in the tire tread frequently, try to avoid using tires that have been mended more than once, and replace tires with large wear and different brands and patterns. The internal and external wear of the tire is quite different. In order to ensure safety and reduce wear, the tire should be dynamically balanced by four wheels regularly and the tire position should be changed.

VIII. Windshield

Keeping the windshield clear is the basic condition for safe driving. Wipers should be scrubbed regularly in winter to ensure that the windshield can be scraped clean in snowy days.

if possible, you can change the antifreeze windshield to avoid freezing in winter. In addition, some windshield deicer can be added to the glass water.

when the windshield freezes, the glass water can be sprayed on it, and the ice will melt, unlike ordinary glass water, which is more troublesome when it freezes. The rear window glass defogging circuit plays an important role. When driving in rainy or snowy days, the rear window glass defogging circuit can quickly remove fog or ice water, thus providing a good rear view for drivers. During maintenance, you should wipe the window glass along the direction of printed circuit, that is, wipe it horizontally. If you wipe it up and down, it is easy to break the resistance wire.

if you need to check whether the defogging line has worked, you can turn on the defogging switch of the rear window to see if the fog on the rear window can be removed. If not, you should first check whether the fuse of the defogging line of the rear window is intact. If the fuse is normal, then check whether the printed circuit on the rear window glass is broken. If it is broken, you should send it to a repair shop for repair, or wipe off the water vapor and dirt on the broken part with a clean cloth, and then cut the tin foil for packaging cigarettes into an appropriate size.

IX. Chassis

Due to the heavy snow and heavy weather, sometimes in order to melt the ice and snow as soon as possible, the snow sweeper often scatters a lot of salt on the road surface to accelerate the melting of the ice and snow. In this way, the road surface is equivalent to a layer of acidic liquid road surface. When the car runs on the ice and snow road surface, the speeding tires will obviously throw the snow water with high salt content onto the chassis of the car, and if the chassis is not protected, it will easily lead to corrosion and rust of the chassis.

so, you'd better spend some time to do rust prevention care for the chassis before winter. To better protect your car. It can also prolong the service life of the car.

X. Air intake system

When entering the cold winter season, the car may often fail to start.

except that the cooling system and the battery are not charged enough, most of the reasons are caused by too much carbon deposit in the throttle and intake. Too much carbon deposit on the throttle itself can easily lead to ignition failure. In summer, carbon deposit on the throttle may not affect the engine start, but in winter, because the ambient temperature of the vehicle is lower, the gasoline volatilization is affected, and the gasoline ignition ability is relatively weak under the same condition, the engine may fail to ignite or need to be ignited many times. Therefore, it is recommended that the owner clean the engine throttle in winter. Under normal circumstances, it is recommended to clean the throttle body and check the spark plug at intervals of about 2, kilometers, which can well prevent the engine from catching fire.

Xi. Lubrication system

As we all know, engine oil has three functions of lubrication, cooling and cleaning, and the normal flow of engine oil is an important medium to ensure the normal operation of the engine. However, the realization of these functions is mainly related to the viscosity and fluidity of engine oil. The viscosity of engine oil will change with the change of temperature. When changing the oil in winter, we must pay attention to choosing the appropriate viscosity. Different viscosity grades are suitable for different environmental temperatures. If it is not selected properly, it will easily lead to problems such as difficulty in starting the automobile engine or even failure to start it.

Improper engine oil will increase the working resistance of the engine, aggravate the wear of mechanical parts and increase fuel consumption. Correct selection of engine oil will undoubtedly increase the service life of the engine.

12. Wiper

When you drive to work in winter morning, you will often find a thick layer of fog or frost on the window, and sometimes the wiper is frozen on the glass. At this time, don't turn on the wiper forcibly, which will not only destroy the wiper, but also damage the glass, and don't wash the glass directly with hot water, which will easily cause the window to burst and deform!

At this time, you can start the engine first, turn on the warm air defogging mode and blow the front windshield. After a period of time, the fog on the glass disappears, and the wiper will naturally separate. If it is too slow, you should usually fill the wiper spray bottle with antifreeze glass water, and if necessary, you can support the wiper. At the same time, you can use a special antifogging agent to apply it evenly on the inside of the glass, which can prevent fogging for about four or five days at a time. For defogging the rear window glass, you can turn on the rear windshield resistance wire for defogging. This function is also the standard configuration of most vehicles. The specific use method is very simple. Most vehicles only need to find this button on the central control panel and press it. Pay attention to more inspections at ordinary times.

XIII. Choose a suitable parking place

In winter, the weather is bad, and windy weather, rain and snow are always sudden. In order to ensure that your car is not damaged by temporary weather changes, you should pay attention to choosing a suitable parking place.

To sum up, the car should be carefully maintained in winter, because the temperature is very low and some parts of the car are fragile, so you should use it carefully to protect your car. These thirteen details hope to help everyone.