Why does my brake pedal go all the way to the floor?

When you press the pedal, it should travel a short distance before the brakes engage. If your brake pedal goes all the way to the floor, it's a sign that there's a problem with your braking system.

There are several reasons why your brake pedal might go to the floor. You could have a brake fluid leak. If there's a leak in your brake fluid system, the pedal will travel to the floor because there's not enough fluid to pressurize the system. This can be caused by a damaged brake line, master cylinder, or caliper.  Air in the brake lines could also cause a brake issue. If air gets into your brake lines, it can reduce the pressure in the system, causing the pedal to go to the floor. This can happen if the brake lines are not properly bled after they've been repaired or replaced.  A worn or damaged master cylinder may result in the pedal going all the way to the floorboard. The master cylinder is the heart of your brake system. It's responsible for creating the pressure that forces the brake fluid to the calipers. If the master cylinder is worn or damaged, it can't create enough pressure, causing the pedal to go to the floor.  Lastly, misaligned brake shoes. If the brake shoes in your rear brakes are misaligned, they won't be able to apply enough pressure to the brake drums, causing the pedal to go to the floor.

If your brake pedal goes to the floor, it's important to have your car towed to a mechanic as soon as possible. Driving with a brake problem is dangerous, and it could lead to an accident.