Brakes

i'd suspect a bad booster to start. but i'd bet there's other forces at play here...

after that we'd need more info: has it been sitting, when was the last time the brakes were serviced (flush & bleed), has any work been recently done-- specifically brakes, but other things apply as well, is everything bone stock, what else can you tell us: have you had the car a long time? did you just buy it? is this a new problem that just suddenly cropped up or an ongoing issue?
Good questions. The place I had doing work on it skipped over all the diagnosis stuff and install a booster vacuum now I'm putting the pedal to the floor every time I come to a stop and then I have to keep on pumping the pedal to maintain breaks. So the car set for years and I don't think anybody put any attention into brakes I pulled off all Wheels and brand new stuff is in the rear and front. I'm guessing that they may have just put the stuff in and never bled the lines. Thanks for your response let me know what you think