Hi, Dave -
I'm pretty sure it's your servo. Same thing happened to me once. While
tooling around out in the country about 400 miles from home, I came around a
curve to find a Jag E-type roadster parked with a For Sale sign on it. I got
hard on the brakes, and suddenly was enveloped in a white fog. Later
investigation under the shade of a tree found that all three of the rear
sparkplugs were coated with a brilliant white substance, and after I got home
and opened the booster canister I found a half-pint or so of brake fluid in
it. That explained where all the brake fluid had been going that I had been
adding frequently.
I rebuilt my booster myself, and it wasn't difficult -- the only problem being
the foam rubber packing for the leather seal was much too thick and made the
booster piston stick and lock the brakes on until I shaved down the foam.
That was trial and error until I got it right.
Get yourself some dry-film lubricant for the inside of the canister. I got
mine here: http://www.sandstromproducts.com
Steve Byers
HBJ8L/36666
BJ8 Registry
Havelock, NC USA
----- Original Message -----
From: Dave Carpenter
To: Austin Healey ; tom felts ; Dick Gaier
Sent: Saturday, April 16, 2005 9:53 PM
Subject: Big smoke
Guess the brake servo bought it. Had the BJ8 out Thursday evening and it
was running great. The brakes were a bit soft even after a bleeding.
Short trip so took it easy and careful. On the way home I go up a steep
long stretch that would be safe to let it wind up in second and third.
At the top of the hill it levels off a ways and the traffic light turned
red, so I stopped. That's when the billows of white smoke engulfed the
entire rear of the car and couldn't see the car behind me. All the
gauges looked good, idle was smooth, smoke subsided then quit. It was
pretty white and didn't smell of antifreeze or engine oil, but it had a
distinct smell that one doesn't normally relate to either of the usual
fluid leaks. If after running that hard up the hill and then backing off
the throttle, I'm assuming the missing fluid I topped up in the brake
reservoir must have been sucked into the manifold under vacuum. When I
get some time, I'll investigate further. Fluid isn't going out anywhere
that I can see, so I'm going to be looking at the servo and doing a
rebuild. We have a local shop that specializes in such rebuilds, but I
think I'll try it myself first because that's the way I am. (Cheap,
handy and dumb enough to venture into the unknown). I've read the past
posts and have some filed about the pitfalls and specail requirements of
the boosters and I'm not scared. Any other suggestions appreciated.
Dave
67 BJ8
60 BT7
60 Bugeye
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