In a galaxy far far away . . . The return of a full pedal and no brake failure light is a mystery to me. I posted a thread a while back and got really great advice from all . I finally got back on the project after a bit of time had passed, and too my surprise the brakes are back after 1 master cylinder and more brake bleeds than I care to admit.

I had a soft pedal and a brake failure light originally, replaced the MC and power bled the brakes with no change so I bled away, looked for leaks, checked the rubber lines, and was going to dead head the MC today. So with the weather finally being good I went back to it. I got in started her up, pumped the brakes a few times and it seemed better. Opened the hood, had a hard time opening the reservoir cap, like there was pressure on it. Saw a few minute bubbles in the fluid, and all was well. I should play the lottery with my luck running good. I am waiting. sort of, for the other shoe to drop, this may raise its ugly head again but for now I am back driving her again. I wonder if those few bubbles were the cause?

Anyway thanks for all the help.

Fred

 

I would say the bubbles were an issue. It really doesn't take much air to mess up an hydraulic system with so little volume as an automotive braking system.
A good little trick for removing stubborn bubbles is to stand on teh brake pedal for 30 seconds or so before you leave teh car parked overnight. I am not sure exactly how this works but it seems to. I think it amalgamates all the tiny bubbles into one big bubble that can work it's way back up teh line but have no proof of this theory.
Sometimes parking on steep hills can help too, it allows bubbles to run uphill back to teh master cylinder.

Regards, Andrew.