how to get pressure in rear brakes?

we did all of this but still no pressure in the rear brakes at the bleeders

Did you let all the fluid run out of the master cylinder at ANY time?

What about the part behind the master cylinder, mmaybe it is going bad

no i did not let the fluid run out of the master cylinder? should i? all i did was replace the right rear caliper only and than i lost pressure.

Man, get all the air out of the system!.. That's all that can be wrong.. Good luck

thank you for the help

Don't let it go dry big mistake!!!! P