Random brake failure need Help!

[Cody240]

OK so I have searched the forums for this problem and have found a few guys with similar problems but I did what they did and it still did nothing. My problem is one day I was getting off the freeway and my brakes worked fine, then I go to stop at the next light and I had no brake so I checked it out and found it was more than likely the master cylinder so I replaced it and bled every thing properly. And yes I checked for leaks in my calipers and lines and found nothing. So the car worked fine till yesterday when I get in it drive not a quarter mile from my house and I have the exact same brake failure no pedal at all even when the car is off it just sinks to the floor so i thought maybe I'm out of fluid but no its full but it has this weird black crap in the fluid and when I went to bead the calipers ( the rear passenger one farthest from the master cylinder have not done the others yet) nothing came out at all so I pumped the brakes for all they are worth and held them and still no pedal and no fluid coming out. I am completely stumped I am waiting for my grandfather to get here so maybe we can figure it out but just wanted to know if anyone knows anything about this if so PLEASE help I need it.

[visser003]

Whoops, sorry...mods delete pls

I wrote a post thinking you were talking about your clutch...FACEPALM!

[Cody240]

Ya no brakes its ok but still some one please help

[OutToWinPAHC]

You had someone pumping the pedal while you opened and closed the bleeder right?

[Cody240]

Yes but I fiked it turns out my master cylinder was bad again guess I got a bad one so I traded it in and got a good one

[vancouverbc]

Yes but I fiked it turns out my master cylinder was bad again guess I got a bad one so I traded it in and got a good one

why is there weird black stuff in your brake system?

[Cody240]

Turns out it was parts of the master cylinder and just dirt and a little moister but I cleared out the lines with bleeding so its all good