Your bake up rings (seals) are leaking off your brake.
Normanly is the systeem full up with hydroliek oil
I think some body put dot 4 brakefluid in.
Than you must clan the systeem end put every where in the compleet brake systeem NEW SEALS and fill it with the right oil.
Regards
john.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.