1. cold car when the brake is no feeling, if you find yourself in a short time after the cold car start, when you step on the brake there is no obvious sense of pause to pay attention to, this is because the transmission pipeline to provide pressure loss phenomenon, to check whether the vacuum pipeline of the brake pump and the engine connection is loose.
2. the brake becomes soft, there are usually three reasons for this situation, one is the brake oil leakage caused by the drop in oil pressure, the second is the brake pad or brake disc failure, the third is the brake pipeline into the air.
Especially when the third phenomenon appears, it will be accompanied by the phenomenon of pedal rebound and increase when the brake is continuously stepped on.
Either one should be overhauled in time.
3. Brake deviation, the usual performance is that the steering wheel deviation phenomenon occurs when braking. This problem is generally a problem with the brake sub-pump, which needs immediate maintenance.
4. the brake is weak, and the brake is not the same as soft, the brake is weak no matter how you step on the brake, it is difficult to get the brake effect, and the distance of the brake is too long, this situation is usually related to the loss of pressure, to timely maintenance.
5. The brake is too hard. When braking, the pedal feels high and hard, and the travel of the pedal has a locking feeling.
6. Brake jitter, brake has obvious jitter, because in the process of long-term use, the surface of the brake pad because of uneven force destroyed the flatness, the most common treatment method is to carry out the disc process grinding, if the situation is serious, you need to directly replace the brake pad.