[mustangman65_79]

If u bleed the brakes, and it still does the same, it's the brake master Cyl. Only about $30. I think it will be just that, a new master cyl. My bronco did the same thing when I replaced my brakes. When a master cyl gets worn, along twith the old brakes, it will still work, but when U replace the brakes, the master cyl is now having pressure build up when is wasen't used to having it. What is happening is the pressure of the fluid is bypassing through the seals, back into your Resivor. Also, you'll notice that your new brakes will wear faster then before. This is because the fluid that is bypassing the seals, is making backpressure, so when U let off the brakes, the back pressure will make the brakes rub harder then normal. Making abnormal wear. Hope this helps.