When buying a second-hand car, besides looking at the engine, what other places need to be checked?

When buying a second-hand car, besides looking at the engine, what other places need to be checked? Many car buyers are still using used cars. From the appearance of the car, through the flatness of the car body, whether the car body is straight or not, and the car paint, we can judge whether the car has a major accident, such as car body, bump, cut, mark, no manding mark and so on. In fact, everyone who owns a car knows that cars will inevitably collide or scratch during use, which needs paint to make up for. What do I need to check when buying a used car?

Users who buy used cars don't have to pay too much for painting, but they should pay attention to the method of "touching by hand". Color difference and traces of painted surface are usually observed; If you touch putty, "Briley" is suitable, and the fineness of sandpaper is smooth when polished. To illustrate: accidents will inevitably occur during use, and body bumpers are more common. It does not have much impact on the price of used cars. Pick a used car or look at the engine and other parts. If there is no problem, you can buy it.

Local paint: Generally speaking, it is minor bump damage and car body damage, so use local paint. There is also the damaged sheet metal of the car body, which can also be painted. Painting the whole vehicle: Because of the paint, it should be done for the whole vehicle. Check the reflection and color difference of light: judge whether the light reflected by the body is bright or dark, and the reflected light is very dark. However, it is not easy for some high-end automobile majors to engage in special maintenance stations stipulated by manufacturers, computer color matching, painting, color oil and coating quality observation. For metal lach, you can check the metal content of the coating. Of course, good quality car users don't have to care. A poorly painted car has a color difference, which is more obvious and can be seen by users.

Feel the smoothness of your hands: If you feel uncomfortable and your body is not smooth, you can feel it. Observe the traces of waste paper: as long as there are traces where the sandpaper has been worn, there are many thick or thin stripes, but the original paint of the car is different. Check the trunk: this may be a place that the car is easy to ignore. Open the lid and observe the edge of the shell. If there is any explanation, observe the fender (trunk side panel) and then observe the light reflection and color difference.

Bumper painting: this is a slight surface damage caused by bumper painting. Many car owners do not pay attention to this part of the paint, which can be judged by the absence of "flora" traces. Of course, don't worry about this car. Judging by knocking on the car: the sound of paint is very low, because the thickness of putty is different from the original car paint. In addition, the perceived weight of the door can be judged within the paint range, and all four doors can feel heavy. 7. Pay attention to the edges, decorative strips and rubber sealing strips: see if there are traces of residual paint and "plant pain". Open the cover: check whether there is paint residue and whether there is color difference in the body paint.

In short, paint mainly includes "paint" and "paint after collision". At the same time, it is also recommended that the owner go to the designated maintenance station to paint, with better quality. It is worth noting that if your car has some slight scratches and unbridled collisions, as long as there is no damage and steel plate, you don't need to draw it, because the paint will affect the purchase price of used cars. In order to consider "face" and paint, you still have to pay. Start the engine through the condition check, and feel that the starting performance is very sensitive, and each start should not exceed 5 seconds; In the idle state, if there is no noise and jitter after idling for 3-5 minutes, the nose still has obvious jitter or uniform speed, indicating that the machine is worn; Pull the throttle (throttle) by hand to check the engine from low speed to high speed; Check the color of the exhaust gas. During operation, the waste gas is colorless and has water droplets. If it is blue, it is described as burning oil.