Alright so title says it all I have a 94 honda civic with a sinking pedal.

Recently bought a rebuilt Master cylinder(tonight actually), bench bled it, bled my whole system till the fluid was as clear as it could be. Tried it out after and the pedal still sinks half-way before applying pressure to the brakes.

Things to note:
-My rotors are wearing the brake pads unevenly(will be replacing rotors within the next few days anyways)
-My suspension is crap; need new shocks and springs(possibly new cv joints and all that)
-I'm not sure of the condition of my drums. Haven't pulled them apart yet(probably going to replace these too with the rotors)

Could a bad bearing cause this? Maybe a seized adjusting star wheel in my drums? The unevenly wearing rotors might cause this issue?

Any opinions would be appreciated. Thanks!

 

Check the rear wheel cylinders. If they are leaking the pedal will get spongy again. If they are good try adjust the rear brake shoes.

 

Will do, I'm hoping it's just that they need to be adjusted...

 

Found that after replacing my MC the brake fluid has been contaminated again.
Ahhh jeez time to check my brake lines...

 

could be your calipers check your front ones and then check your drums