In these two days, a series of sunny days and high temperatures above 20 degrees are predicting a reality: summer is coming. For most of the Jiangnan area, Meiyu + high temperature is not so good for the next few months. Such an environment can easily lead to "summer disease" in cars. The reporter has investigated a number of 4S stores and maintenance plants and found that the five “summer diseases†are the most likely to be committed and how to prevent them?
Summer sickness: air conditioning mildew
Starting this Monday, Hangzhou rose sharply. Mr. Zhang, who lives in Chengdong, opened the air conditioner for the first time this year. "Good smell!" pungent odor, so he almost jumped out of the car. In fact, if it is not used for a long period of time, dust will accumulate in the filters, filter elements, air inlets and outlets, pipes, etc. of automobile air conditioners. Especially in the south, the mildew of car air conditioners is more pronounced after a wet and rainy spring. If you turn on the air conditioner without washing it, there is no difference with the “drug abuseâ€.
How to diagnose: Most automobile manufacturers require that the air-conditioning filter of a vehicle should be replaced once a year or 30,000 kilometers. According to the actual environment in Zhejiang, this cycle is best shortened to six months or 20,000 kilometers. The real situation is that the car has never replaced the air-conditioner filter for five or six years. Finally, there are numerous examples where the filter element is contaminated by dirt.
The easiest way to determine if your car's air conditioner should be cleaned is: smell. After you turn on the air conditioner, if you smell odors, hurry to clean it! If you do not smell musty, but the car was more than half a year away from the previous clean air conditioning (or more than 20,000 kilometers), it's best to wash the air conditioner. After all, not everyone's nose is so sensitive.
Therapeutic treatment: At present, most 4S shops and some professional maintenance factories can provide automotive air-conditioning cleaning services. The technicians inject the special cleaning agent through the air inlet, pass the filter, filter element, pipeline, etc., and finally discharge it from the air outlet. After cleaning, the mold content and odor in the car air conditioner will be significantly improved. However, if the air conditioning is not cleaned for a long time, the filters and filters must be replaced once they have been blocked.
In addition, at the beginning of summer every year, the automotive air conditioners should also check the refrigerant (Freon). If they are insufficient, they should be added in time to avoid affecting the cooling effect.
Summer disease II: wire aging
A terrible car self-ignition accident, you must have heard or seen it. However, you may not necessarily know that there is at least one (or bundle) of aging wires behind a car's auto-ignition accident. On Friday, in a Sino-German automobile on Shixiang Road in Hangzhou, the reporter followed Fu Master, who had more than 20 years of experience in auto repair. He checked several cars together and found that the longer the car, the more serious the problem of aging the line.
A BMW 730, which was produced around 2005, had almost all of the plastic skin outside the headlight wires fall off, exposing the copper wire inside. In addition, its rubber cover outside the string was missing. Master Fu said that it is very dangerous to lose the circuit protected by rubber and other insulators. Because once the positive and negative wires meet, sparks will erupt. Summer temperatures are high and can easily cause auto-ignition accidents.
How to diagnose: Open the hood, you can see there are a lot of wires inside. In the whole car, here is the most active exercise, the highest temperature, and the most susceptible to electrical aging. If you see the insulation rubber outside the wire cracking and falling off, be careful. In addition, some bundles of wires are wrapped in rubber tubes. During the continuous movement of the automobile, the rubber tube constantly rubs against and collides with the outside world. Once it is damaged, it will further exacerbate the aging of the wire.
Therapeutic remedy: The aging of rubber, you can not stop. In general, the car began to age about 5 years after it started, and the aging situation became more serious in about 10 years. Therefore, the longer the car, the more it should be checked out. If you find that the wires are exposed, you should replace them in time.
In addition, we can also take some measures to delay the aging of the wire. Many 4S stores, auto repair shops, and auto beauty shops provide engine room maintenance services. The masters apply a layer of protective liquid on the outside of the wires, which can effectively delay the aging of the insulating rubber and extend the life of the wires. Summer sickness 3: Oil leaking from the tubing If the auto-ignition ratio of the car is “death,†then the aging of the wire and the oil leaking from the tubing are the “black and white eyes†of the “death†men. In most cases, sparks due to aging of the wires will The oil leaked from the tubing was ignited, eventually causing a situation where it could not be cleaned up. Following Master Fu, the reporter also found a BMW 7 Series which was about 10 years old - its engine oil leaked out and soaked the underground iron partitions. Once met with Mars, it is highly flammable.
How to diagnose: There are two ways to determine if the car is leaking oil. The first is "look". Check the engine compartment and car chassis carefully to see if there is any trace of oil leakage; the second is "smell." Unlike oil, gasoline is more volatile and it is difficult to see traces of leakage. However, if you notice a noticeable petrol smell when you are using the car, be careful—the car is likely to leak oil.
Therapeutic remedy: Oil leakage from tubing may be caused by loose tubing, or damage to tubing or components. In the first case, as long as the tubing is tight, in the second case, the safest way is to replace the tubing or the entire component. Of course, it's best not to do it yourself. It should be done by professionals.
Summer disease four: tire puncture
The car was driving open and the tyre suddenly exploded. This is really scary, the temperature is rising, and the summer has become a high season for puncture.
How to diagnose: Gong Gonghui, a technician from Hangzhou Guo'ao Automobile, stated that the primary reason for the summer puncture was an abnormal condition of the tire itself. For tires that have injuries, meet or exceed the service life, bulging, and eccentric wear, the chances of puncturing in the summer will increase dramatically. In addition, the timely adjustment of tire pressure in the summer is also critical. Due to the principle of heat expansion and contraction, the tire pressure in summer tires should be reduced by about 10% from the standard air pressure.
Therapeutic remedy: Before summer, tires should be carefully checked. Once the service life of the tire is reached, or if there is a trauma or if it has been bulged or worn, it is best to replace the tire in time. In addition, depending on the type of vehicle, tire pressure is different. In general, the standard tire pressure for small cars such as cars is 2.2 (atmospheric pressure), and the standard tire pressure for large cars is 2.8 (atmospheric pressure). If you do not know the standard air pressure of your tire, you can open the cab door and look at the nameplate on the side of the door. Generally, the vehicle will be marked on it.
Summer sickness five: car flammable
Many people like to dress their cars garishly: today, put a bottle of perfume on the center console; tomorrow, the rear window is filled with dolls; the day after tomorrow, the seat cover is replaced with linen. However, the actions of these cars eventually became the source of car damage.
How to diagnose: Last summer, Hangzhou Zhongde Automobile received a BMW X3 that burns spontaneously. Unlike most self-ignition vehicles, the ignition point of this vehicle is the back seat. According to maintenance staff's inference, the vehicle owner puts debris in the back seat. , is an important reason for fueling the fire. As summer temperatures rise, items in the car may become "time bombs" at any time.
Therapeutic treatment: Before the summer really comes, clean up the debris in the car: Take off perfumes, dolls, ornaments, waste paper thrown everywhere, infrequently worn clothes, and easy-burning seat cushions. The simpler the car, the better. After all, this is a vehicle, not a storage room.