Driving on the road, if the tire does not happen to have a spare tire how to do it? Own a pump it, it does not take up too much luggage space, you can always ensure the ideal tire pressure tire, fuel-efficient and protect the tires to ensure traffic safety. After inflating the pump is very simple to use, using the car's 12V cigarette lighter power. Before inserting the air pump power connector into the cigarette lighter, check that the air pump switch is in the off position, and it is recommended to let the car engine run to enhance the power, but to pull the car's hand brake to prevent it from sliding , And then the air pipe copper nozzle air nozzle directly on the tire air valve, and then you can start the inflatable pump inflated. When the gauge indicates that the tire has reached the desired pressure, turn off the switch and remove the air tube from the tire air valve. Continuous use of not more than 20 minutes When using the pump, do not operate in the vicinity of the ignition source, flammable gas liquids, and let it in the ventilation Department to facilitate its cooling, the pump part of the run-time exhaust will be heated, can not touch, especially It is important to prevent the child from touching the pump and do not walk away while inflating, as this may cause the tire or other inflatable objects to burst. In addition, the pump used for 12-20 minutes after continuous use to let it take a break, make the body slightly cool before use, can extend the life of the motor. Special reminder: General car tire inflation about 3-5 minutes to reach the normal tire pressure, such as the beginning of inflation, the pointer quickly rise in about two or three seconds to reach 490KPA, it means the air is blocked, the air did not enter the tire , At this moment, turn off the power immediately, dial the gas nozzle and restart the operation, otherwise the instrument and motor will be damaged. Currently on the market most of the pump has a variety of functions, such as with a tire repair gun and rubber, lighting, warning lights and have the vacuum function. Reference: Tsinghua Tongfang portable multi-function pump (with tire repair gun and rubber) Price: 205 yuan Tsinghua tongfang compact multi-function pump (built-in high brightness energy-saving lighting and tire pressure gauge) Price: 328 yuan wind King 4 with 280P pump (lighting, warning, tire pressure gauge, cheer) Price: 115 yuan Wind Wang 250P cheer suction vacuum tire pressure Reference Price: 135 yuan