Soft Brake Pedal

[SaM]

Ever since i've had my NB8A the brakes have never impressed me. I have bled the brakes about a thousand times, installed braided lines, greased the slide pins, and adjusted rear calipers so they are almost dragging. All of which has resulted in no significant improvement. I have noticed however, with the handbrake applied 30% the pedal feel is improved significantly. Also, when I push the thing that floats inside the master cylinder, black misty stuff comes out.

After all this I think the master cylinder may need replacing, would you blokes agree? Any advice would be appreciated. Currently running QFM HPX Brake Pads

[Regie]

sounds like the master cylinder or brake booster has a leak, probably a hole in the diaphragm inside. you change them both as a whole anyways

[manga_blue]

The seals around the pistons in the master cylinder are deteriorating. That's the black misty stuff you see - perished rubber.

As soon as I see that starting to happen on any car of mine I replace or rebuild the master cylinder. Soft pedal then goes away.

[SaM]

Cool cool, this has been helpful. I'll look into a new one/rebuild.

[bruce]

On an aside, my gasket around the reservoir cap was deteriorating. This caused misty rubber to dirty my fluid.