how to fix brakes

What is your question?

2005 dodge ram 1500 4.7 liter quad cab 2 wheel drive. replaced front pads , calipers and rotors. have bled the system for 2 hours and no brakes? tried every trick i know and no results. pedal gets hard whe pumping to bleed as soon as i start the truck the pedal goes all the way to the floor. test dive and after using brakes several time pedal gets firm but then will go soft and push to the floor? What seems to make the problem better or worse? none How long have you had this problem? woking ok change both calpers on front