Had some trouble with the rear brake seizing a week or 2 ago, so i bled them which sorted out the problem, the rear started to rub again so i have just now bled it again (full bleed)but when doing the lever it pulled loads of air out until the syringe was nearly full of air??.
I tried again using another syringe and it still does it, lever feels ok but surely so much air indicates its getting in somewhere, anybody have any ideas?
Seals and pistons?
Could also have caused the seizing.
I got one of those cheap bleed kits off ebay and it didn't seal against the lever end until I added a second o ring. The proper avid bleed kit worked OK without modification.
abductee.....that could be it, i have the cheap ebay set.
In my instructions it says be careful how much you pull the plunger when doing the lever end as you can pull air in past the seal. Probably that.
Try these kits.... www.bleedkits.co.uk