Originally Posted by BigEsGarage
I can't stand that, you think you got it an Bam, nope not it.
Have you cracked open one of the bleeders, when the brakes start to drag?
Just to see if it is in-fact something up line causing your problem?
How do you know it's not the residual valve?
I'd even crack open the fitting at the M/C to narrow things down.
Like, if you did and found too much or pressure at X then you'd be sure.
Know what I'm saying...
The residual valve was my first thought even picked up a new one. I was sure it was the pushrod because the brakes released when I loosened the MC mounting nuts. I'll try cracking a fitting on the MC since both wheels are dragging.
I've had brake problems ever since cheap import parts took over, had 2 brand new Oreillys wheel cylinders fail on one car and a pressure switch fail on this one both resulting in brake failure. When I installed the Blazer rear end on this ride I rebuilt both calipers and both dragged because the O-rings where too large making the pistons stick.