hey guys my trucks brakes are acting up. i have no brake pressure until im practically at the floor so i thought air in my lines. i bleed the front brakes and no air. i also replaced my drums this past august and bleed them too. but my wheel bearing just blew and i replaced it. im not losing fluid cuz the reserve is full. could my brake booster be going? any help is greatly appreciated.

 

What do your front pads look like..? Maybe they are shot..cuz the rear drums don't do much assisting with braking to begin with..

 

front pads are like new prolly only 500 miles on them