I have a 1985 250r with a failed rear brake. It is full of fluid and I have tried bleeding it. When pumping the pedal with the bleeder open it has no pressure at all and spits out a little fluid at a time (very little).
With the bleeder valve closed when I pump on the pedal (with fluid), there is no pressure at all and I see no signs of leakage while pumping. Please help with suggestions.

 

Sounds like air in the lines. Get a brake bleeding kit. It's a pump that you attach to the bleeder. it pulls fluid through the system. Much easier than pumping the brake, closing the bleeder, and repeating.

 

either youre not bleeding them right or the master cylinder has failed.

 

the thing (i dont know what it is exactly called, mabey pump?) that pumps the fluid into the brake lines might need new seals. I did on my 200x.

 

You should put new seals in your master cylinder.[img]i/expressions/face-icon-small-smile.gif[/img]