For those of us that have spongy Brake Pedal feel...even after new rotors, pads and bleeding of the brake system this may be the cure for you...
How to fix Spongy Brake Pedal Feel
1) Remove the two nuts holding the master cylinder to the brake booster; they are 14mm bolts.
2) Once the nuts are removed, slide the master cylinder straight away from the brake booster. There will be a lot of resistance due to the vacuum build up. You can rock the master cylinder back and forth and you will here the vacuum relieving, once it does you can slide the master straight back.
3) Locate the rubber o ring and ensure it is still in place. It fits between the master cylinder and the brake booster.
4) With the master cylinder pulled back (leave all lines and wires attached) just position it out of the way. You will clearly see a 7mm bolt that is threaded into the rod sticking out of the brake booster. The rod has a grooved shaft that you will need to hold with needle nose pliers to keep it from turning while backing out the 7mm bolt.
5) Back the 7mm bolt out of the rod (counter clockwise) about 1/2 turn or how much you see fit. I tried half turns until I got the brake pedal to where I wanted it. Pic beloe of the cut that you back off on the end of the rod...
NOTE:It is possible to loosen the bolt too much to the point where your brakes will drag, that’s why it is advisable to go in such small increments. Seems that most are taking between 1-1.5 turns to get it right.
6) Bolt the master cylinder back in place and you’re done.