[Rhodes22-list] Auto Gas Tank Vents

[Bill Effros]

Thanks Hank and Rik,

Do you know where the valve is?  I don't think it's in the gas cap, 
doesn't that just let excess pressure out?

Bill Effros

Rik Sandberg wrote:
> Bill,
>
> There is a one way valve in the vent system. Let's air in but not out. This is why, many times there is pressure in the tank when you open the cap. Having a little pressure in the tank keeps the evaporation to a minimum. Many carrs used to have a filter on the vent line that somehow trapped the gas vapor and supposedly put it back into the fuel system. I don't really know how this worked or if they still do it that way.
>
> Rik
>
> -----Original Message-----
>   
>> From: Bill Effros <bill at effros.com>
>> Sent: Jun 28, 2006 9:32 AM
>> To: R22 List <rhodes22-list at rhodes22.org>
>> Subject: [Rhodes22-list] Auto Gas Tank Vents
>>
>> How does air get into automobile gas tanks to allow the fuel to exit?
>>
>> Bill Effros
>>
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