Bleeding rear caliper.

[sinto607276]

Another good tip is hang a weight on rear brake pedal and leave overnight, because its under pressure forces air out, I always bleed till I get some sort of pedal/lever then leave overnight with weight, to do front just tie lever to bar with tiestrap (also use this on ferries to stop bike moving, just make sure you got snips or a means of cutting it off) 

Good idea :thumbup
I use a wee strap that has a sort of locking mechanism and easy to release when I do my front ones, also great for checking brake lights too. (don't need snips to remove and can use it over and over again)
Couldn't figure out how to do rear pedal but thought maybe using said strap with a couple of bricks hanging from pedal.