[4DoorSS]

x2 on the MC. I had an old caddy with very similar symptoms you described. Replaced the MC and the problem was fixed.

 

[4DoorSS]

Grease on the bleeder

I don't think he mentioned why he used the grease in the bleeders but petty sure I know why. When I bled out my brakes I use a might vac pump to pressurize the bleeder and then pull air and fluid out. If I don't seal the base where the bleeder threads in to the caliper, then air gets pulled in thru the threads of the bleeder too. I've just used a dab af Vaseline for the same purpose.

Never used the speed bleeders but for the money, they are on my parts list when I redo my brakes.

 

[4DoorSS]

I'm ready to off myself. Bought the centric FWB m/c from rockauto, cheap, and came with reservoir. Bench bled the basterd, but I'm still getting foam from the front circuit. What can it be ? ABS ?. This is a TX car, no rot, no questionable lines.

Damn pert near the end of my rope.

Well, damn!!

If the metal lines and hoses all look good....bad proportioning valve?? That's just a wild guess.

Edit - Maybe the seal on the Resevoir lid is bad?