Sounds like the diaphragm in the vacuum booster has developed a
rupture, in a little while the rupture will be large enough to affect
the brake power assist.
Time to order parts.
Mike
At 05:19 PM 7/19/2008, eastern sierra Adj Services wrote:
Recently, my car's cannister-type power brake system has emitted a quite
noticible hiss, when the brake pedal is applied (most noticible,
obviously, when the car is stopped).
The braking effort hasn't changed, but I want to prevent any future
catastrophes, if possible.
AFAIK, I've never overhauled the brake booster but have replaced the M/C
with a dual-system.
I did replace the vacuum hose, leading to the cannister, as it looked
like there might have been a crack in it which may have been creating a
vacuum loss, but that crack didn't go thru the hose, & the hiss iss
persissting....
So, what-all do I need to buy and do, to be hiss-less?
Neil Vedder
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