Hi please help iv got a 1980 sa22c and its brake master sticks when I brake and pops up after a few seconds iv had the master off and took to brake specialist and had a kit done ... No change still does it if I press hard it sticks longer ,, pedal height is good just sticks please help its like iv got a fluid return problem , car has discs front and the original drum rear, I'm running out of ideas

 

rebuild kit do not work that well, because there is were inside the housing. I would recommend getting a new master cylinder and make sure everything is bleed properly.