Originally Posted by 70worm
So I put new u-joints and pads on the front of my YJ back in Jan. After that I have a real soft pedal and comes to a slow stop. My brakes were not very good before that, but they really don't work good now. Since this happened I have changed the pro-valve, rotors, master cyl, pads, and bled about 20 times. Yes my bleeders are above the line. 2 years ago I replaced pads, rubber and metal lines, and MC. Somebody told me it's possible for rubber line the get a bulge in it when you hit the brakes and cause this, I don't think that's the problem.
Just read it again...my comprehension must be failing.
You said you put on new U joints and pads...by that do you mean the knuckle Us or the drive shaft Us? If you pulled off the calipers and were musceling around the steering joints there is a VERY distint possibility that you stressed the one or both of the rubber hoses going to the calipers. either by hanging them while you were working or by having them drop once or twice in the process.
Like I said before, it doesn't take much bulge to make the pedal soft 1 or 2 CCs of extra fluid is a lot on the pedal.