I have an 84 Diesel Suburban. The breaks wont work at all. Is it the master cylander
I tried to stop the sub and the breaks hit the floor. I pumped them and I got breaks back. Next day same thing but more often. Third day no breaks at all! they have not come back. Master cylander is full but it looks like sludge. I cleaned out the sludge, wiped everything down bled the breaks. Breaks still do not work. If I push them to the floor it kicks back a bit but I have no breaks. No leaks no fluid usage. Can it be a bad master cylindar?