I had this problem on two different cars. The cause was old flexible hydraulic
hoses that had deteriorated inside.
I changed them and the problem was resolved.
From Don's iPhone 203-592-8427
Or 203-264-8301 home
> On Jun 24, 2021, at 4:39 PM, Joe Brown via Tigers <tigers@autox.team.net>
> wrote:
>
> 
> Hey,
>
> I'm scratching my head over an issue I'm having with my brakes. This
> actually started last year and I'm just now trying to sort it out.
>
> Basically, after pumping the brake pedal a few times the front brakes lock up
> (only the fronts). If I crack open either bleed screw they free up. In
> fact, cracking open the line anywhere going back to the master cylinder frees
> up the brakes.
>
> I have bypassed the booster, replaced all of the rubber lines and rebuilt the
> calipers. This seems to leave the master cylinder. I disconnected the brake
> line from the master cylinder and put a short line on it that feeds back into
> the master cylinder reservoir so I could bleed any air out of it. That all
> seems to work okay.
>
> So, I'm looking for other ideas.
>
> Thanks,
> Joe Brown
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