What causes brake failure
what would make the brakes not work had someone fix the vacum hoses so I could take it in for smog test. Now the brakes are not working when you step on them it goes all the way to the floor an can hear a swishing noise. was going to bleed the system but can't even do that cause it will not hold pressure. something is not hooked up right, this is on a 1986 ford motorhome