brake problems

The other day, I decided to go ahead and change out my front brake pads. I compressed the piston's in and all that good stuff and put the new pad's on. Well, I noticed that afterwards that my brake pedal was extremly mushy. Last week I had the rear end out of my car and had to disconnect the rear brake lines. Well after bleeding the rear brakes, I could still take the pedal all the way to the floor. So I pulled the front wheels off, and proceded to bleed the front brakes. After bleeding the front's, the brake pedal is better, but it still almost goes to the floor (if I really stomp on it). Here's a few things tho:

The brake fluid that came out of the rear brakes was clean fluid, but the fluid that came out of the front brakes was very nasty.
Also, it's not like there is barely any fluid getting to the calipers, when I would have my friend build up pressure then me release the bleeder valve, plenty of fluid would come out instantly.

I really dont even know where to start. It just doesnt make sence to me that after changing the brake pads, my pedal would seem horrible. Any help?

wmburns said:

When you compressed the pistons, did you force old brake fluid backwards through the ABS system?

Better to not force old fluid backwards through the system. Open the bleeder valve and let the old fluid escape from the bleeder screw.

How hard was it to compress the piston? If it was real hard, what may be happening is the piston is binding inside the caliper. This is what is making the pedal feel weak because the piston can not move freely.

New calipers may be in your future.

Click to expand...

I did not open the bleeder valve. I was thinking I might have ruined my calipers but was hoping it was something smaller. If this is the case, new calipers are in my immidiate future. With this car being my DD, I am not going to risk my life along with others due to my stupidity, so new calipers are going to be ordered tonight.

Problem solved.

I went and bled the master cylinder and kept bleeding until all the darkish colored fluid was gone. Feels like new again! Thanks for the help!