Ok, first, thanks for all those who helped in possible diagnoses of my brake problem. However, it's not all fixed yet. I replaced my master cylinder yesterday and bled the brakes once. The pedal would travel too far before braking, and felt spongy. So today, I spent 3 hours with a couple friends helping out on the pumping and bled the brakes 3 more times. Oh, as a bonus note, one of the two lower bleed screws broke on the passenger front caliper. However, I definitely got a bunch of air out of the lines, and by the last run through there was NO air coming out of any bleed screw. So now, the pedal is firmer than it was yesterday, and maybe a BIT firmer than before I replaced the master cylinder, but still a bit spongy. It is a manual (M46), and when I press the brake pedal, not much happens until just before it is even with the gas pedal (about 2-3 inches). then, it does get pretty stiff, but I can still push the brake pedal down further until it feels like the mechanics won't travel any farther, not the master cylinder stopping it with pressure. So, does this sound like the new master cylinder is bad? None of the rubber lines seem to be bulging to give a soft pedal, and I'm not sure what the proportioning block could do to make something like this happen, so I'm leading to the idea of the master cylinder being bad AGAIN. How could I have ruined a new master cylinder? thanks,
Nate Gundy
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'86 240DL sedan, 260K miles, M46, K cam, 25/21mm sways, 260 front springs, wagon rear springs...working on my valve spring compressor website...