If you have a brake pedal that slowly goes to the floor, you either have a bad MC or a leak. Since you replaced the master cylender, there has to be a leak. Have you checked rear wheel cylenders for seapage? Have you checked all rubber brake hoses and steel lines for leaks? Are the rear brakes properly adjusted so as to not over extend the wheel cyenders?
Let me know.
Saturday, June 5th, 2010 AT 6:45 PM