Defective master cylinder, low of fluid, or leak somewhere else in the system.
usually they will leak out the back by the booster, your brake pedal will slowly go to the floor at stops or the brake pedal will go right to the floor when pushed.
Something is impairing the brake pedal to go to the floor. Only a mechanic can tell you what is happening.
no you have a brake fluid leak somewere
probably have broken parking brake cable.
I think you have air in the brake lines.
ouch,are brakes adjusted correctly/ sit in vehical and pump pedal to get a full pedal,then hold pedal to see if it bleeds off and goes to floor,if it stays, replace shoes and pads if it goes to floor, there is a fluid leak somewhere is there brake fluid in the resevoir/ are there any brake fluid leaks ,check backside of wheels there is a brake fluid pump, on the chassis rail about level with the front of the front door on the left side.if this pump is bad your pedal will go to the floor
No, a busted brake booster will not cause the brake pedal to go to the floor. It will however cause the brake pedal to be extremely hard to push. A defective master cylinder will cause what you describe. Replace the master cylinder and bleed the brakes. It can because it happened to me. The booster lost vaccum and the pedal went to the floor. Sorry, you are wrong. The only reason the pedal went to the floor was because the master cylinder failed. The brake booster only boosts the pressure on the master cylinder and allows you to not have to push so hard on the brake pedal. Cars of yesteryear did not even have a brake booster and they stopped just fine albeit you had to push the pedal allot harder than with power brakes. A failing brake booster will not cause your pedal to go to the floor although it might cause it to go lower than normal before the brakes apply. As long as the master cylinder is good you will still have brakes, but you will have to really push hard and might even have to pump them up in order for them to stop the car.
There are several reasons why your car brake pedal can go to the floor. None of them are good. Your reservoir might be low on brake fluid. Your master cylinder might be worn out. Some of the brake cylinders might be worn out. Whatever it is it is time to get it fixed before you kill someone else and perhaps yourself.
sounds like overheating of brake line, either from hot pavement, or cat converter. causes brake fluid to boil and loss of pedal.
It wasnt assembled right
Low fluid level or defective master cylinder.
possibly needs a master cylinder