> I was wondering if my TR250's brake booster is working like it should, the
> usual failure mode (I assume) is the diaphragm cracking. So to test I should
> just disconnect the vacuum line to the intake manifold and suck, if I can
> get any air to flow it's bad, right?
The way my booster told me that it was reaching the end of its life, was by
ingesting large quntities of brake fluid. There were no visible
leaks anywhere on the car, but the fluid level had to topped up
every week or so. Also on HARD application of the brake, a large plume
of white smoke poured out of the exhausts. The cause was a split
diaphragm, which allowed brake fluid to be sucked in by the engine.
Gerry
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