i drove the 86 today. ( love it ) and the brakes go straight to the floor. and it has some brakes. it been like this since 04. weak booster? tried bleeding them. didn't help at all.
If you pu,p the brake pedal..does it build up?
I'm guessing bad master cylinder
Could be a bad master cylinder, a bad caliper, or a bad wheel cylinder in the drums. Take off the wheels and look for leaks. If you dont find any it probably just has a bad master cylinder.
Are you losing fluid?
I'm guessing the MC is toast
Ugh..i wouldn't drive the car then until it gets fixed. Never know when you'll need a panic stop
The same thing happened to mine, and i am in the process of flushing the brake lines. my brake fluid was jet-****in black. Ive heard old, cruddy brake fluid can cause the MC to "internally bypass". For the $7 in brake fluid and an hour bleeding them, i figured its worth a shot.
When you bled your brakes, did you just bleed what was already in there, and refill, or did you flush? is the fluid super cruddy black, or nice and clean yellowish? Might try flushing, like me, before pointing the finger at the MC.