October 14, 201312 yr Subject says it all, had a big off and since the pressures just gone no resistance in the pedal at all, bled them and the fluid still flows and the pads move a small amount, changed pistons and seals. Any ideas what's up?? It's an 09 evo btw, Cheers in advance alex.
October 14, 201312 yr What was damaged after your off? Are you bleeding the brake with a vacuum brake bleeder?
October 14, 201312 yr if you pull back the rubber seal on the master cylinder is there fluid leaking out
October 14, 201312 yr 09 is now 4 years old and about time for some corrosion to have built up in master cylinder. A complete strip and thorough lean including polishing the cyliner bore with fine wet and dry will probably cure it. Check for leaks / cracks everywhere.
October 15, 201312 yr You have got air that is trapped. Very frustrating. Get that rear caliper way above the master cylinder and work it from there. If it is real bad let it sit a few days that way.
October 15, 201312 yr Author Thanks for the replies -Only damage I could find was a slightly bent disc could have been like that before right enough that's been replaced now though, and I'm using a home made syringe and tubing job! - not sure will check when I get a chance, - cheers will give that a shot. Probably worth doing anyways even if it's not the problem. - Thanks will give that a bash as well, Cheers for the help so far, will let you know how I get on. Alex.
October 15, 201312 yr When it gets upside down you get air into the master 2 possible remedies 1) push the piston back into the caliper, all the fluid is forced back into the master and hopefully the air bubble too, these bikes push so little fluid it's a real pain to bleed it all through 2) bleed it at the master banjo bolt In that order Hope it helps
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