Step one: appearance inspection
Body paint inspection
When checking, keep parallel with the vehicle, it is best to check in the sun, use the reflection of the sun to observe, after all, the paint on the new car is a one-time good, if there is a color, it is sure to be after the paint, It is likely to be caused by an accident.
Assembly flatness
Observe whether the bumper, the front photo, the headlights, and the door gap are even. In fact, this is not difficult for the old driver, but the novice driver may be difficult. After all, it is the first time to see the car. In fact, the novice driver has mastered the above-mentioned car. The paint check can be done, and the paint surface can be used to determine that the vehicle has not been involved in an accident.
rearview mirror
All the rear-view mirrors look, not the inside of the tube, or the outside, and the mirror is broken if it is missing. Even though you smash everything at home and say something like “safety,†the rear-view mirror is It is better to keep the truck driver safe, but still not broken.
Check the door
Check whether the door handle switch is flexible and whether the door seal is complete; then open the door to observe whether the door has drooping, and then close the door, listen to whether there is a harsh metal knocking sound, and then compare whether the closing sound of the two sides of the door is Consistent, if the four-door vehicle is still comparing the sound of the four doors, or the same two behind,
Check key
Check whether each key can be unlocked, lock the corresponding lock, and don't use your family's key to drive your own car. It is definitely not open.
Inspection glass
Check the glass for scratches, especially in the front windshield, for good light transmission, no bubbles or abnormal refractive index.
Check tires
Check whether the whole car tires are worn, but the getting off tires in the "back-carriage" transportation will be very heavy, and there will be a look at whether the tire brand is the same, not the front tire is Michelin, and the back becomes the triangle.
Chassis inspection
Look first at whether the beam is deformed, and then see if there is any oil leakage, what the rear axle, engine, gearbox, etc., and then check whether the chassis line has worn or broken.
Step two: Interior inspection
There should be no dirt, especially in corners, etc. If it is dirty, it may be someone else picking the rest or having a problem-adjusted car. At the same time, it should be checked whether all facings contain broken places, such as hollow tables, seats, roofs, and car floors.
Check seats, berths
The new car's seat, sleeper and other interior parts should have plastic cover. Check whether the vehicle's plastic cover is complete. If it is sitting on the seat, feel if there is foreign matter inside the seat. If the chair can be adjusted in multiple ways, it should be Tests are made to see if there is any abnormal noise in the process of debugging, and the headrest cannot be missed.
The sleeper needs to lie down and feel like there are no foreign objects inside, and the bunk is the same. Check whether the berth folds smoothly and check for looseness.
dashboard
Check whether the instrument panel is clean and scratched; in the case of not inserting the key, check all kinds of buttons to see if the buttons are all reliable, and if there is a button, the “fragile†situation will fall. Then put the ignition switch on, and check if the indicators of the instrument cluster work properly.
Look at other electronic operation buttons can not work, such as: manual or electric window regulator, air conditioning adjustment button, cigarette lighter, etc., one do not fall.
seat belt
Seat belts are an important part of ensuring the safety of drivers, so they must be strictly checked, opened, automatically recovered, and locked. They should be smooth and smooth. Simulate and check the reliability of seat belts when they are active.
light
What kind of low beam, high beam, turn signal, brake light ... ... as long as the car can be checked carefully, the light should be bright and stable. Don't be the one-eyed headlights that are on the bright side of the headlights, or the blinking lights.
Wiper system
Check the wiper water spray system, the wiper system is normal, do not have a pot of water on the windshield wiper has not evaporated quickly. The wiper should not have the sound of "squeaking..." in the wiper. If there is a description, the wiper blade is aging.
Step 3: Engine Idle Check
The ignition of the engine should be short and smooth. After starting, the engine speed should be stable, no jitter and noise, and observe whether the various instruments and alarm devices work properly.
Find a screwdriver on one end of the engine, the other end on the ear to listen to the internal sound of the engine, or simply take a stethoscope, so you can hear the sound of the engine, so the engine only has a "snoring" sound, There will be no other noise, such as ring sounds, knocking sounds, valve squeaks, and so on.
First of all, listening to idle sounds should be smooth and continuous. There should be no metal percussion sounds and other abnormal sounds. Clear, noiseless cars should only hear very little noise, and noise should not be harsh. After a short period of time, the engine tachometer pointer should be stable.
Transmission
The gear shift should be light and flexible, the gear position should be accurate, and it should not be out of gear, chaos, or abnormal noise. It should be smooth when continuously shifting gears.
air conditioning
The air conditioning system has a normal air outlet. After the cold and hot air is adjusted, it should be able to blow cold/hot air for a certain period of time. Adjusting the tuyere should be able to close smoothly. Adjust the circulation mode of the wind, such as internal and external circulation, defrosting mode, and outlet mode, etc., and respond immediately, and change the air volume of each tuyere accordingly. The outlet should not blow too much dirt and odors.
Step 4: Driving Check
If the above checks are fine, the new car will soon be on hand, but don't be too happy to do the final inspection. The inspection during driving should be more stringent.
Start
The starting process should be smooth, there is no abnormal sound at the engine, gearbox, etc. Pay attention to whether there is a “squeal†sound when starting, and the scream here does not mean the screaming of the person. It is the sharp sound of the belt that is aging, resulting in no friction on the surface and friction with the pulley.
Slow speed
Drive the car to a relatively wide place and drive it at a slow speed. Do you feel any abnormalities, whether the gears are smooth, whether the steering is sensitive, and whether the car body has abnormal noises during driving?
accelerate
When accelerating (the new car shouldn't be accelerated quickly), the overspeed of the engine should be steady, and there should be no sudden explosion and fire, tempering, and fire, and the corresponding pointer of the instrument panel is sensitive to reaction. In the acceleration process, there should not be a car phenomenon when shifting, and it should basically be in a steady acceleration state at all times.
Normal driving
When the vehicle is used at different speeds, the vehicle should be stable. When it is stable at a certain speed, there should be no abnormal sound of the engine. The corresponding indicator of the instrument cluster should be stable and there should be no obvious fluctuation. Pay attention to whether or not the body will make a "drum ... ... bang ..." sound when driving, like the sound of a poor sofa.
Steering
The steering can be tested in driving whether it reflects the accuracy and sensitivity level, must try to turn the minimum radius, listen to whether there is friction sound, and check the left and right steering angle, usually around is not the same.
The steering mechanism should be maneuvered flexibly during driving, doing “Oâ€-shaped driving, doing “Sâ€-shaped driving, checking the flexibility of turning. When you go straight at a speed of 20 km/h to 30 km/h, your hand temporarily leaves the steering wheel, and you should not experience deviations, sideways slips, etc.
brake
The low-speed braking should be gentle, accurate and smooth, and the body should have no nodding. When braking at high speed, it should be sensitive, rapid, and powerful. It can run without deviation or slip. It can check whether the parking brake device is effective and reliable on the ground with a certain slope. Don't park on the slope, you get off the bus, and after a turn, the car has "self" to go down.
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