Why is there always something wrong with the car's brake system?
If not, it should be the throttle!
A good braking system is an important guarantee for driving safety. Don't ignore any abnormal signals. Braking sound is an important way to understand the fault of braking system. Some cars screech when they brake. Possible reasons: the violent friction sound indicates that the brake system needs to check or replace the brake pads, especially for most disc brakes, which will make a harsh scream when braking, which is undoubtedly equivalent to reminding you that you need to replace the new brake pads.
When the car is refueling violently, you can hear the noise from the chassis and the gear makes a "click". When the bearing fails, it will make a "rustling" sound, and in severe cases it will become a "squeaking" or "wheezing" sound. Possible reasons: When the car is idling, the noise disappears after stepping on the clutch, indicating that the noise source is caused by gearbox failure, which is caused by the wear of gearbox bearings or gears.
Generally speaking, when driving, the normal sound of tires is smooth and soft, and the volume is low. If there is a high-volume rhythmic "click" sound or "shout" sound, there is probably something wrong. Possible causes: tire tread deformation, bulging, serious wear or tire pressure is not within the standard range, which may lead to tire radial jump and abnormal noise when driving. Need to change the tire or adjust the tire pressure, and always check the tire condition while driving.
If it hasn't been solved, I have encountered a complicated situation, that is, the brake booster pump needs a vacuum environment, and it needs to be evacuated through the intake part, so he also connects the intake pipe, so I suggest stepping on the brakes to feel it.