I went through more than 2 quarts last year when debugging my brakes. I bled them completely between everything I tried. And I never blocked off ports as part of the debugging process.
I think that Shiny is right about that the pedal should be hard if you block off one of the ports of the M/C even if the other port is wide open, never thought of that.
At the end of the day if the M/C is good and the system is bleeding properly then there just has to be a leak or air in the system somewhere. The reason the the bad rear wheel cylinders are hard to debug is that air can get sucked into them without an apparent leak (unless you have a residual valve in the system.) But I can't think of anywhere else that this can happen.
Interesting that neither of you guys have seen the switch trip as part of the debugging process because it seems to me that it should have. Mine has always been stuck closed and yours is stuck open. Starting to make me think about the quality of the piston assembly in the Inline Tube blocks.
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1969 Lemans vert, matador red, 462 CI, 3.07 12-bolt posi
1974 455 TA, admiralty blue/red interior HPP "cover car" - sold
"The best way to show a car is to drive it"
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