I recently acquired a 1990 Ford Ranger 4 cyl 2.3L I had to replace the rear drum brakes, springs, cylinder everything. I tried to bleed them and nothing came out. I released the bleeder valve on both thecylinders and pressed the brakes i could barely move the pedal. Could it be the master cylinder or some blockage in the line. Does it have something to do with the new cylinder i put in. I also bled the front brakes and nothing has happened.