What should I pay attention to when lifting the car?

1. Take all the bills with you before you pick up the car. Such as invoices, factory certificates, insurance policies, warranty certificates and instructions. 2. When picking up the car, check the real thing according to the ticket. For example, check whether the color, exhaust volume, factory year, frame number and engine number of the car are in line with the actual situation. 3. Go around the car for a week and carefully check whether the paint color is consistent with the color of the whole car. There are no scratches, paint drops, cracks, blisters or rust on the body surface. Touch it with your hand to see if there are any signs of repair. Don't cover the remaining traces with dirt or dust, so as to check whether it is a used car. 4. Check whether the spare tire in the tire size is the same as the other four kinds of tires (note: Bora has Goodyear, Continental and Hantai tires, and I prefer Goodyear). 5. Check whether the headlight cover (large and small lights) is damaged, whether the doors and windows are complete, whether the rear view is good, and whether the front and rear windshields are damaged. 6. Press the front, back, left and right corners of the car by hand, and the pressed parts will not jump more than twice after releasing the hand, indicating that the shock absorber has good performance. 7. Check whether the vehicle leaks (coolant, lubricant, brake fluid, electrolyte and refrigerant). 8. Open the door and check whether the car seat is complete and whether the seat can be adjusted back and forth. Whether the chair cover is neat, whether the sofa is leather sofa, whether the floor is clean and well sealed. Whether the door handle is flexible, safe and reliable, and whether the sealing strips of doors and windows are damaged. Whether the manual (or electric, hydraulic) window glass control mechanism works normally. Check whether the scene image in the rearview mirror is clear. 9. Sit in the cab, turn on the power at first, and check whether the wiper and water spray cleaner work normally. Turn on the lighting system and check whether the headlights (large and small lights), brake lights and anti-fog lights work normally. Press the horn button switch to check whether the horn sounds. Check whether there are recorded figures in the odometer, which generally do not exceed 60km (Shekou to JS) 10. To start the engine, first observe whether all kinds of instruments and alarm devices work normally. When the water temperature and oil pressure are normal, listen to whether the engine is running normally and whether there is abnormal noise; Whether the idle speed is stable when the throttle is closed (the accelerator pedal is released). Get off and observe whether the exhaust pipe is normal. (It is best to exhaust continuously, and the palms are odorless and colorless) 1 1. Carry out a road test to check the acceleration, idle speed, load, braking performance, handling stability, ride comfort and passability of the car. 12. Check whether the transport protective sleeve (yellow) of the front wheel shock absorber has been lifted. Step 1: External inspection when the vehicle is stationary 1. Look at the paint surface, carefully look at the hood and roof plane at a 45-degree angle, because compared with the side elevation of the car, the painting effect on the car plane can best reflect the level of painting technology, and it is also the most vulnerable part to expose defects, no matter when the paint layer is not handled well. It is easy to produce wrinkles and blisters. When the working environment of spray painting is poor, it is easy to leave spots on the paint layer, which will naturally greatly affect the appearance-no one wants to buy a car with acne, right? In short, the color of the car surface should be harmonious, uniform, full, flat and smooth, without pinholes, pits, wrinkled skin, blisters, flow marks and scratches, and the boundaries of different colors should be clear. 2. Check whether the gap between the door, the hood and the trunk door is even and whether the rubber strip at the door joint is well sealed. When closing the door, apply a little force, the door should be locked automatically and reliably. Be flexible when opening the door, and the door shaft must not be loose and noisy. The opening and closing of the window should be light, flexible and tightly closed. The window glass should be transparent without ripple, and the front windshield should not be dazzling. 3. Rubbing strips and decorative lines of the car body should be straight, with smooth transition and consistent gaps at the interface. 4. The rearview mirror should have clear imaging and flexible adjustment. 5. When the tire pressure meets the requirements, from the front of the car, the height of the symmetrical parts of the car body, bumper and human plate should be consistent. 6. Check whether the models and patterns of tires (including spare tires) are consistent, and whether there are cracks and blisters. 7. Push and pull the upper side of the tire from the side without feeling loose. 8. Check the headlights. The types, specifications, color filling and lighting height of symmetrically installed lamps should be consistent. Replace the far and near lights, the brightness and illumination position should be correct, and there should be no deviation and astigmatism. The installation and luminosity of various lamps shall meet the requirements of the manufacturer's factory instructions. Step 2: Check the engine 1, open the engine hood, and check whether there is oil stain and dust on the engine and its accessories, especially whether there is leakage at the joint between the cylinder head and the cylinder block, the oil filter interface, the air conditioner compressor, the steering booster pump and the transmission shaft. Pull out the dipstick to see if the oil on the dipstick is clean and bright, and the oil amount should be between two scales. 2. Check whether the coolant and brake fluid levels are between the maximum (max) and minimum (min) scales. 3, cold car to start the engine, should start smoothly, each time no more than 5 seconds, ignition can be started once or twice. After starting, the engine speed should be stable without shaking or abnormal sound. 4. Change the engine speed smoothly, and the corresponding pointer on the dashboard should be sensitive. When accelerating. The engine shall be free from sudden explosion, fire, backfire and ignition. When the engine is stable at a certain speed, the engine should have no abnormal sound, and the corresponding pointer on the instrument panel should be stable without obvious fluctuation. 5. After the engine runs at low, medium and high speed for a period of time, let the engine idle for a certain period of time (generally 800-900 r/min) to see if the engine is stable, with or without jitter and noise. 6. At the same time, observe the exhaust gas discharged from the exhaust pipe outlet at the rear of the vehicle, which should be smokeless (except steam at low ambient temperature) and tasteless (put your hand near the exhaust port for a while, and then observe whether there is oil stain on your hand. Smell it). 7. After the engine stops for a period of time, start the warm car. At normal operating temperature (60-80 degrees Celsius), the engine should start successfully within 5 seconds. Step 3: driving test 1. Before driving, press the brake pedal to the maximum force and keep it for one minute. The pedal cannot move down slowly. At the same time, you can use this time to see if the front view is open and feel whether the seat is comfortable. Note that the seat is too soft, and it is easy to feel tired after driving for a long time. 2. When stepping on the clutch. Should be connected smoothly and separated thoroughly. No slip, no trembling. 3. The gear shifting of the transmission should be light and flexible, with accurate gear shifting, no gear shifting, no random gear shifting and no abnormal noise. 4. When driving at low, medium and high speed, it should be smooth and there is no noise in the car. The acceleration of the car should be fast and powerful. The shorter the acceleration time from the initial speed of 20km/h to 40km/h, the better the dynamic performance of the car. 6. When the road bumps or runs over a stone, the tire should have the effect of automatically returning after jumping. 7. When going straight at a speed of 20km/h-30km/h, keep your hands away from the steering wheel for a while to see if the car is running off or skidding. 8. When driving, the steering mechanism should be flexible, make an "O" shape, and look at the turning radius (the smaller the radius, the better the maneuverability of the car). When the wheel turns to the limit position, it should not interfere with other parts. Drive in an "S" shape and see the flexibility of turning. 9. When the vehicle speed is 30km/h, the gear shall be disengaged, and the sliding distance shall be above 160m. You can refer to the telephone poles on the roadside, and the distance between the two poles is generally about 50 m. 10, the braking shall be sensitive, rapid and powerful, and there shall be no deviation or side slip. Braking distance conforms to factory regulations. 1 1. According to the instructions, try the heating, air conditioning and other facilities on the car according to the season to see if they meet the manufacturer's regulations. 12, check whether the lights and various signal signs are complete, effective, accurate and reliable. 13. Finally, verify the driving fuel consumption to see whether the economic indicators meet the requirements. Step 4: Check 1 after parking. Open the hood and check again for oil leakage, water leakage, electricity leakage and air leakage. 2. Observe whether the front and rear shock absorbers, brake pumps, transmissions and transmission shafts under the vehicle are leaking oil. 3. On the ground with a certain slope, check whether the parking device is effective and reliable. 4. Touch the brake disc and drum carefully and quickly to see if it is very hot. 5. Whether the central control pin, door pin, burglar alarm and other facilities are effective and reliable. Through the above steps. We can generally examine the performance of cars from the aspects of power, economy and reliability. We can comprehensively consider these aspects with the convenience of use, maintenance and supply of auto parts, and try to choose manufacturers with perfect after-sales service guarantee system. From the perspective of safety, we should also try to choose cars with airbags and ABS anti-lock devices.