Bud,
Check that the line(s) from the charcoal adsorbtion cannister to the
separator in the boot are clear. Mine plugged with a mix of rust and
stale gas, but I was able to blow it clear with lung power. The air to
replace fuel pumped out of the tank should enter the bottom of the
adsorbtion cannister, pass through the filter, charcoal and then out the
top, be routed via a line to the separator and then to the tank.
If you can't clear it, you can drive with the gas cap loose, or with a
notch cut in it's gasket as a temporary thing.
Bob
On Fri, 23 Jun 2000 19:57:35 -0400 Bud Krueger <bkrueger@ici.net> writes:
> Still don't know why, but my gas cap vent - didn't. Neither did the
> rest of the
> system. Yesterday morning I was in my commuting mode, running along
> smoothly at
> 60mph, when all of a sudden the engine sputtered and died as I
> pulled onto the
> shoulder. Sat there for a moment and pondered the world while
> listening to the
> silence of 5:15 am. After about a minute of contemplation, I turned
> the key to
> listen for the fuel pump. No sounds. Turned the key farther -
> engine fired
> up. Said "sonuvagun", or something like that that, and pulled back
> onto the
> highway. About two miles up the road it happened again. Pulled
> over on the
> shoulder - got out - went around to the back and loosened the gas
> cap. THUMP!
> You should have heard the sound of the tank sides expanding after
> the inrush of
> air. I'm very impressed with the ability of that SU pump to suck up
> some
> vacuum. Left the cap at the first click and continued on my way.
> Strikes me
> that this shouldn't happen in a '77B with the charcoal cannister
> still plumbed
> into the vapor separator. I'll check it out tomorrow.
>
>
> --
> Bud Krueger
> http://home.ici.net/~bkrueger/
> 52TD x2
> 77MGB
>
>
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