When I press the brakes in a car, there is a sort of hissing, almost compressed air sound coming from the brake pedal. What causes that? - Quora
When I press the brakes in a car, there is a sort of hissing, almost compressed air sound coming from the brake pedal. What causes that? - Quora
![Troubleshooting brake failure and brake fluid leaks - Diagnosing braking problems and noises with shoes, rotors and calipers Troubleshooting brake failure and brake fluid leaks - Diagnosing braking problems and noises with shoes, rotors and calipers](https://www.ifitjams.com/braking.gif)
Troubleshooting brake failure and brake fluid leaks - Diagnosing braking problems and noises with shoes, rotors and calipers
![My brakes is making a hissing sound (like air coming free) when I brake but it isn't affecting the brakes, what could it be? Could it be a leak maybe? : r/Cartalk My brakes is making a hissing sound (like air coming free) when I brake but it isn't affecting the brakes, what could it be? Could it be a leak maybe? : r/Cartalk](https://preview.redd.it/6z6dnd7n8j141.jpg?auto=webp&s=c46c6ba65c03943e21c511aa72916a59ca256259)