>A friend recently purchased a 72 Spitfire with less than 3k total miles!!
>Everything worked ok until about 2 weeks ago when the brake warning light
>came on. He checked for leaks and the functioning of the pwd valve and
>bled the system. No leaks were found and the pwd and the brakes seemed to
>function properly, but the light was still on. He then took the car to a
>K-Mart repair shop (big mistake) they said he needed a new master cylinder
>and returned the car to him with the brakes barely working at all (pedal
>would hold only momentarily and then slowly go to the floor).
Sounds like a bad mc to me. I've more then once had a brand new or brand new
rebuilt
mc that was bad right out of the box. That's part of the reason I bench bleed
the mc
on a bench.
It is possible his original mc wasn't bad, but it's a stretch. It's
theoretically
possible for the rear brakes to be so far out of adjustment that the calipers
would
build up enough pressure to move the pwd valve before the rear brakes engage.
However, it's a stretch, and your friend would be complaining about a brake
pedal on
the floor.
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