Calvin,
I had a very similar situation with my 77B. I finally found the culprit --
the brake line was pinched flat right under the strap that holds it to the
axle. Replaced the line, bleeds fine.
Bud Krueger
52TD
77MGB
Calvin Krug wrote:
> I've been reading the discussion on spongy brakes, as I've been trying to
> bleed my brake system for most of this week. It's been too hot to spend a
> lot of time on it, but I've tried just about everything. Pumping the
> pedal; using a mityvac; and gravity bleeding. The fronts work just fine,
> but I can leave the rear bleder screw open all day and only get a few drops
> out of it. Do I have an obstruction somewhere? I have one more thing to
> try, I'll open both rear screws, hook a hose on one with the other end in a
> container of fluid, and the mityvac on the other bleeder. If it pulls
> fluid through that way, I'll know it's not in the rear pipe. I suppose it's
> possible that a little chunk of dirt got in one of the lines while the
> system was apart for a year, but the rears have always given me trouble.
> Any ideas?
>
> Calvin Krug
> '79 MGB
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