99' Hyndai Sonata (V-6) brake problem. My brakes

it sound very probable. it sound like a stuck caliper and bad hydraulics. first things first. pull the wheels and inspect the calipers for anything foreign in them. next if you are mechanically inclined you can remove the caliper and check its slide pins for proper movement. if all is good replace master cylinder with a quality part and get a friend to help you bleed the system by starting at the r/r wheel and opening all bleeder screws until a steady drip is seen. close all screws.get your friend in the car and have him hold the pedal down while you open the bleeders. do this for all( starting at r/r, l/r, r/f, l/f)until a steady stream is seen. it should gbet better with each wheel you get to. good luck.