Thanks to all for your suggestions on where to check.
Well, I didn't get to check much this weekend due to getting sick,
but I was able to look at a few things.
There is no overflow line connected to the carb. This will be
remedied as it looks as if fuel would dump on the hot exhaust without it. One
thing I tried with this was to swab out the overflow connection on the carb
with a q-tip. There was a little fuel, but gummy. I then ran the car
(driveway) until it warmed up fully (about 10 minutes, 86F that day) varying
the speed of the engine, and checked again. There was a small amount, but not
much. I know this does not reproduce road travel, but was easier to monitor
for a test. Let the car sit for a few minutes and returned. No smell in the
cockpit or under the hood (bonnet).
I then backed the B onto some ramps I have and man was the fuel smell there.
The strange thing is it was coming from under the hood (bonnet), not the tank
that I was checking. I did check the tank and no sign of leaking. However,
the foam seal from the battery cover to the cockpit is shot, which would allow
for fumes to come in if there is a small hole in the top of the tank. I guess
I'll have to take the tank out to check the top for leaks. the roads are
pretty poor around here and trains run all over, so there is a lot of fuel
sloshing going on.
Luckily we just acquired another car. The B is my daily driver and I don't
want to risk running it too much until I get this sorted.
Erich 1980 MGB Roadster
1970 Norton Commando Roadster
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