brakes on 1992 Audi 100

the brakes are going all the way to the floor!I replaced the master cyclinder still the same so i tried to bleed the brakes nothing what my p and how could i pin point the problem

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1 answer
if you are sure the master is ok, the brakes are bled correctly and there are no external leaks then check the brake hoses for swelling. also, if you had brakes done recently it may be the pads are "compressing" too much. this usually happens when rotors are old and pads are new until the can "seat" to each other.