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The hot summer is coming, and the use of car air conditioners is becoming more and more frequent. Many riders also have headaches because of various problems with their car air conditioners, such as "the cooling effect is not good, and the problem cannot be solved after adding and changing the refrigerant"; " The car has a lot of power, but the air conditioner is boring"; "When the air conditioner is just turned on and the wind blowing has not cooled down, it will smell a mildew-like sour odor, smoke and dust. If you stay in this environment for a long time, You will feel dizzy, nausea, lung discomfort, cough, dizziness, etc." This is what is called "car air-conditioning disease" in medicine. If you stay in this sub-health condition for a long time, it will cause respiratory diseases if it is not prevented in time, which will seriously endanger the...

The brake pedal travel is too large, the braking effect is slow, the braking efficiency is very low or even lost, and the braking distance increases. Cause of failure: 1. Insufficient brake oil pressure. (The brake master cylinder lacks oil, the brake pipe is broken, the oil pipe joint is leaking, and the oil circuit is blocked);2. There is air in the braking system;3. The free travel of the moving pedal or the brake clearance is too large, the brake shoe friction plate is in poor contact, the wear is serious or there is oil; The bowl is aged and damaged. Troubleshooting:1. Depress the brake pedal continuously, for example, the pedal gradually rises and has a springy feeling, but stop after a while When the pedal is still low, there is air in the brake system, and the brake system should be exhausted at this time. 2. The braking with...

Buying a new car, car owners often decorate the car beautifully first, while ignoring the maintenance of the car body itself. In fact, the first car body maintenance and waxing are often the quality assurance of car maintenance in the future. What problems should I pay attention to in daily maintenance? 1. Daily maintenance content(1) Appearance inspection: Before leaving the car, look around the car to see if the lighting device is damaged, if the body is tilted, if there is oil leakage, water leakage, etc.; check The appearance of the tires; check the condition of the doors, engine compartment cover, management compartment cover and glass. (2) Signal device inspection: Turn on the ignition key (do not start the engine), check the lighting of each warning lamp and indicator light, Start the engine to see if the warning lights go out normally and if the indicator lights are still on....

For particularly dirty seats, many car owners say they are difficult to clean. Here are some tips for you today. Just follow what the car grooming experts say when cleaning and it will come out very clean. First, wipe the fiber surface with a dry cloth, then thoroughly dry the seat fiber, if the flannel is still dirty, use mild soapy water and Wipe with lukewarm water, then dry thoroughly. Second, use a vacuum cleaner to remove dust and dust debris. If the dust condenses on the flannel or is difficult to remove with a vacuum cleaner, brush it with a soft brush before vacuuming, according to automotive beauty experts. Third, it is best not to eat in the car at ordinary times. When eating, try not to let the fine slag of the food fall on the seat, so as to avoid the breeding of mites or other microorganisms...

The timing is important to know if the car is broken down and if it should be serviced. Simply put, once you're familiar with your car and understand how it behaves and sounds under normal conditions, a new noise or anomaly in the car's performance can be a warning signal to you. When you take your car to a garage and describe a performance degradation or problem to a mechanic, be aware of the noise and symptoms associated with it. Arguably, the more you know about your car, the better you'll be able to describe the car's faults and help the mechanic make the right diagnosis, thus prescribing the right medicine. New or unusual noises are often signs of a car malfunction. For example, a low hum might be a faulty bearing, or it might just be a tire problem; a squealing sound might indicate a brake pad needs to...

For safety reasons, as a car owner, you should have a certain understanding of the relevant fire protection knowledge of the vehicle. The dry weather in winter should be more cautious on this issue. So, how to prevent vehicle fire? Here's some common sense for you. First, do a daily inspection of the vehicle. Regularly check whether the plug connectors (or connectors) of electrical appliances, switches, lamp sockets, brake light switches, etc. are loose or fall off. Special attention should be paid to checking whether the connection posts, wires, and insulation of high-current electrical devices such as ignition switches and batteries are reliable. Usually, when the driver maintains the vehicle, he only wants to wash the appearance or check the tires, water tank, etc., and seldom repair and protect the battery wiring and contacts. Usually, they rarely check whether the contacts are loose and whether the wiring insulation is damaged...

 It is best to do sterilization and disinfection once a quarterIn order to keep the interior of the car clean and hygienic, in the season It is best to do a thorough cleaning and sterilization of the car before, especially the roof, seat cover, leather chair, air outlet, air duct and other parts of the car. In addition, pay attention to whether there is any juice, food, urine, feces, hair and other residues left in the car. In order to prevent problems before they occur, the best way to prevent the growth of bacteria in the car is to choose air-conditioning sterilization products, or do a photocatalyst sterilization for the car and place an air purifier in the car. Experts suggest that according to the air pollution situation in Shanghai, it is best to do sterilization and disinfection in the car once a quarter. In particular, the sterilization of automobile...

The reason why the pressure relief valve is a separate chapter is because this part has been mentioned a lot and said a lot. At present, due to the commonly used low-pressure method, the pressure relief valve is a crucial part of the output power of the engine. Through the control of the pressure relief valve, the same engine often has different output characteristics. The reason why the pressure relief valve is mentioned as a separate chapter is because this part has been mentioned a lot and said a lot. At present, due to the commonly used low-pressure method, the pressure relief valve is a crucial part of the output power of the engine. Through the control of the pressure relief valve, the same engine often has different output characteristics. Controlling the working pressure of the engine is the core functionThere are many theories about the function of the pressure...

I often see many netizens saying on the Internet that there is a problem with my car, the back door cannot be opened, the steering wheel is locked, the underside of the chassis is clicked, etc. In fact, in most cases, similar problems are These are some extended functions of modern cars, or normal phenomena of parts. Today we will talk about these. If you encounter the following situations, don't worry, these are normal phenomena or problems that can be easily solved. Rust on new car brake discsNote: gentle brake break-in This situation is more common in summer or in the south, especially for some stock models, the brake disc is more rusted, mainly because the brake disc is usually made of steel (usually cast steel), Stainless steel usually has average wear resistance and strength, so naturally there will be rust. There is no need to worry about this situation,...

The weather is cooling down and winter is coming. The snow and icy roads in winter make it crucial for those car lovers to get the right "winter boots" for their cars. In this way, the car can give full play to the good performance of the vehicle during driving in winter, and can prevent accidents from happening. Therefore, it is imperative to replace winter tires at this moment. It is best to replace winter tires below -7??Experts recommend that when the temperature is below minus seven degrees In this case, it is best to replace winter tires. The standard tires of most cars now are all-season tires. All-season tires can also be called all-weather tires, which combine the performance of winter tires and summer tires. Still, in particular driving situations, it appears featureless and mediocre. In particular, at low temperatures, the grip of all-season tires will be weakened. The...