> If that air was exchanged every day the water would accumulate but in an evap
> loss controled system the air that is in there will remain pretty much
> unchanged.
Even with the evap loss system (as implemented by Triumph), the tank is still
open to the atmosphere. Every time the barometric pressure changes, there will
be air exchanged with the tank.
> Any air excahnge will be through the charcoal which will
> absorb much of
> the water as the air goes in (when things get cooler) and give it back up as
> the air exits (as things warm up).
If the charcoal can absorb moisture from the air, it will quickly become
saturated and not absorb any more. Then any air sucked into the tank by changes
in barometric pressure will have a full load of water. The charcoal may even
aggravate the problem, by humidifying the air sucked in when the pressure rises
after a rainstorm. And if it's then cooled to the dew point, any droplets will
run under the gasoline and thus be prevented from evaporating again.
Randall
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