So my integra is acting up it's not braking anymore like the brake pedal sinks all the way to the bottom. I've tried the following already. New brake calipers, New master cylinder, brand new pads, and Yes I've bled the brake lines already. I fill the master cylinder to the appropriate level and the next day it's empty again. The next thing I'm going to try is check the brake lines and replace them. If you got any suggestions please help me!

 

Sounds like there is still lots of air in your lines and you need to bleed them better or you have a leak somewhere. The leak should be pretty obvious if you aren't driving it.

 

Have someone step on the brake while you are under the car looking. Have it on jack stands for your safety.

 

What sequence did you use when you bled the brakes? You always start rear passenger, rear driver, passenger then driver. Next question, when bleeding were you letting the pedal go all the way down, because if you did you just ruined it! Next thing you said that you installed a new MC, did you make sure the MC seal was facing the right direction, and did you install a new seal with that new MC.

 

I did it the same sequence as you stated above and I did use a new master cylinder seal. How did I ruin it? I thought you were suppose to let the pedal go all the way down?