Automatic Left Turn when applying brakes?

If your front brakes are good and getting good pressure you could try checking out the rears. Depending on the shape of your brake lines there could be rust and gunk built up in there from over the years, of course if you've had the same fluid in there for 20 years that can cause it's own problems.

interesting problem .... extreme pulling to the left as you describe is likely due to no or little line pressure at the right-side caliper ..... but since you said that you rebuilt that caliper and bled the system means that you should have had lots of brake fluid flow to that caliper -- corect ?? .... if so, then there shouldn't be a blockage in that right side line anywhere .... wrt to "o-rings" -- I'm not familiar with "o-rings" used in the distribution block as I thought that those were double-flare fittings and "o-rings" are not used/needed ..... in fact I'm not aware of "o-rings" being used anywhere in the brake system, at least for the OEM setups -- they all use double flare fittings except for the flex hose-to-caliper, which has a copper washer .... if you crack the right side bleeder and push on the brake pedal, you should get a good stream of fluid with a "soft" pedal .... then while still pushing you close the bleeder, the pedal should immediately firm up ..... but this is all very puzzling .... additional info may help if you're so inclinded to provide some .... good luck .... --67GTFB

There is a good video on west cost clasic cougar, on how to rebuild the distribution block. It sounds more like a gunky caliper/piston sticking in the bore to me.

#1-I have personally heard/read few good things about silicone brake fluid, especially in long term applications. Also gumming/clogging/clumping if any moisture or DOT 3 contamination.

#2-Beyond checking all brake system parts and before rebuilding/replacing all of them, might I suggest that you check all suspension components, bushings, etc? What I'm getting at is that the problem may not actually be the brakes. For example: if the strut rod on the left is loose or has crumbled/worn bushings, it could easily cause your stated symptoms. Other worn/loose parts could do the same.

Just A Thought Or Two,
Gene

horseballz said:

#2-Beyond checking all brake system parts and before rebuilding/replacing all of them, might I suggest that you check all suspension components, bushings, etc? What I'm getting at is that the problem may not actually be the brakes. For example: if the strut rod on the left is loose or has crumbled/worn bushings, it could easily cause your stated symptoms. Other worn/loose parts could do the same.

Just A Thought Or Two,
Gene

Click to expand...

Yeah - that's what I was thinking too. If there are any loose or worn suspension components it can cause symptoms as described.

Of course the brakes themselves are the best place to start.

OK, thanks for the extra info .... I forgot about the internals of the distribution block, so my bad on that .... that may be the cause but if those are bad, I would expect fluid to leak out around the switch ??? .... well, we can conjecture all day long .... I agree (fwiw) with your next steps to tear the brake lines down and blow them out .... one of those PITA things to do .... suggest replacing the distribution block too .... good luck .... let us know how things turn out ....