help need answers

[Brad kirk]

I just finished my install of springs and struts and i noticed that when I stepped on the brakes the pedal went further down than usual. Upon further investigation i noticed that when I pressed harder the car twists much like only the front right and back left brakes are functioning. I dont think its the master cylinder because the pedal doesnt slowly leak down to the floor. I NEED HELP

 

[luigisho]

what year? I would look at air in the system, master, frozen caliper, and old failed hoses that look ok but fail on the inside of the rubber hose.