| Rear calipers are a PIA sometimes because the line is horizontal, allows bubbles to trap up in the line but still let a bit of fluid by.
Take a syringe from an autoparts store or feed store, put some clear tube on the end then
Fill the syringe with brake fluid and then put the hose over the bleeder valve
open the valve and push fluid back through the system, have the cover off the MC, you should see air bubbles, have a friend tap the line with a small wrench lightly moving from the rear to the MC>
Another trick is to remove the Caliper and hold it down if you are going to reverse fill from above or hold it up and bleed it pumping the MC.
Or Put the bike on a jack and raise the rear get it unlevel. |