Where should I check to buy a used car?
It depends on the appearance and operation of the engine. The engine is the heart of the vehicle. The condition of the vehicle mostly refers to the condition of the engine, that is, the wear of the cylinder liner, piston and piston ring. Generally speaking, an engine in good condition is easy to start, running smoothly at idle speed without irregular jitter; Oil pan, cylinder gasket and spark plug are free of oil leakage, water leakage and air leakage; If the exhaust gas is black, it means that there is something wrong with the carburetor, high-voltage circuit and combustion system. The exhaust gas is blue, indicating that the piston ring is seriously worn and the oil enters the combustion chamber.
Check the degree of tire wear, the service life of the vehicle is directly proportional to the mileage. The less mileage, the better the vehicle condition. But most people who sell used cars will adjust the odometer to a limited number to show that the car is in good condition. The original owner won't spend a lot of money to update a tire that costs about 300 yuan to 500 yuan. Therefore, the overall condition of used cars can be roughly judged by looking at the odometer and tire wear.
The most direct feeling to experience the driving performance of the vehicle and judge the condition of the used car is the riding comfort of the vehicle. During the test run, after the engine temperature is normal for a period of time, listen carefully to whether the engine sound is stable, and then shift gears frequently to see whether the response of the vehicle is stable during acceleration and deceleration and whether the gearbox synchronizer is flexible. Release the steering wheel temporarily on the wide road to see if the car will get out of control. If the high-speed vehicle appears abnormal jitter, especially the steering wheel, during the trial operation, it shows that this vehicle has serious comprehensive problems and should be replaced.
In order to find traces of accidents, some used cars are only sold after major accidents. Generally speaking, vehicle accidents will be manifested in the front of the car, which is the key part of the engine, so it is necessary to find out the situation of the front of the car carefully. You can observe whether the girder of the chassis is symmetrical and whether the screws for fixing the electronic fan and the water tank are reopened; Whether the windshield rubber sealing strip has been reinstalled, etc. Generally speaking, it is best not to buy an accident car. There are accident marks at the rear of the car, so it is not a big problem to use.
Check the body condition and don't be confused by the appearance of the car. You should patiently turn the car body a few more times and carefully observe the corrosion of the fender and the lower edge of the door. Generally speaking, the plates in these places begin to rust in the fourth year of use, and the more serious the corrosion, the longer the service life.