Charcoal Canister Delete?

[cody at 5000tq.com]

Quoting Mike Arman <Armanmik at earthlink.net>:

> If the fuel system on a car is totally sealed, how do they  
> compensate for the use of the fuel? What takes the space in the tank  
> where the fuel was? Or are car fuel systems just not sealed as  
> tightly, and the pressure does equalize albeit more slowly?
>

With modern systems this is all handled through the charcoal canister.  
Many systems actually run the tank under slight pressure or vacuum on  
purpose and monitor that pressure as a way of detecting vent leaks. I  
have diagrams if interested.

-Cody