Help with brakes on 94 chevy s10?

Where you able to manually adjust the rear brakes tight ? before you bled the system? I would get a friend and manually bleed the brakes. Pump the pedal five times wait 10sec between pumps on the last downstroke. Open the bleeder screw at the right rear wheel cylinder. Continue this bleeding method until you get a solid stream of fluid out the bleeders on all for wheels. Keep the MC topped up.