I have heard a noise from my gas tank about 5 seconds after shutting off  the
engine. I heard this noise both before and after replacing all of my fuel
lines.  I am thinking that there is something clogged with my charcoal  canister
or the valve on it. Has anyone on the list had a similar symptom and a  fix
for this issue? My van has 245k on the odometer and I have never done  anything
with the charcoal canister or valve. The noise sounds like pressure or  a
vacuum releasing on the gas tank ("donk" sound). Almost sounds like someone
stepped on the tank and then took their foot off of it. I searched the archives
but maybe didn't use the right keywords. Thanks to anyone with any suggestions
on where I might start.

David Clarkson
90 Westy 245k

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