Ok, this is not rockets science we are dealing with here ... But I have been having nothing but problems with my brakes now that I'm near the end of my rebuild. I don't want to bore you all with all the details of my woes ... But will just start off where I am now.
What I have is all brand new or newly rebuilt as follows:
Master Cylinder (309)
All Lines and Hoses
So basically the entire brake system is all spanking new. There are no leaks at all and the brakes - front and rear bleed with a smooth clear stream (over and over again) and looks fine - no air. When the brake pedal is hit, the rear brakes work perfectly. No issues. They grab tight and hold.
Now the %^&#&% Front disc is another issue! They don't seem to grab at all. But yet, if I pump the brake pedal 5 or 6 times, the grab a little more with each pump, and then hold tight. Once I let off the brake, the it's the same thing again. 5-6 pumps before the front hold tight. Again the rear are working as designed.
I'm stumped and at wit's end on this. This should be a pretty simple thing and it is beating the crap out of me. I'm about ready to swap out the Master ... Again!
But after reading through this thread (good stuff), I am now thinking this just might a proportioning valve issue - even though I all ready replaced my original one (the round one under the master cylinder). Any and all help/advice would be most appreciated.