right got a problem with me brakes ive binned all abs and got all bits from a 3i i had a problem with bleeding lines i just could not get air out system it failed its mot because of travel in brake peddle when engine not running.as its meant to go rock solid

its been at ford today to bleed system they done it 5 times and got all air out well they said they did but peddle still move an they said they dont no why and dont really want to no seen as ive taken off abs.they did say to change the master cylinder which i have but still no good any other ideas its driving me mad
also i forgot the black pipe which joins master cylinder to the inlet manifold makes a like hissing noise so might be this ????
cheers
jon