<VV> Fuel Tank Collapse

[Hugo Miller]

Some modern cars seem to run with a partial vacuum in the tank, for 
reasons which I don't begin to understand. Yet another reason for not 
buying a new car.

On 2020-02-16 03:03, jim bannister via VirtualVairs wrote:
> Did anyone think of a vented gas cap that would allow the gas tank to
> inhale, thus preventing collapse and a vacuum lock interrupting fuel
> flow.  Seems like a no prainer to me.
> Jim, '66 turbovert
>
> -----Original Message-----
> From: VirtualVairs [mailto:virtualvairs-bounces at corvair.org] On
> Behalf Of tony.. via VirtualVairs
> Sent: Saturday, February 15, 2020 4:40 PM
> To: virtualvairs at corvair.org
> Subject: Re: <VV> Fuel Tank Collapse
>
>
> On 2/15/2020 12:45 PM, Grant Young via VirtualVairs wrote:
>> GM had a problem with collapsing tanks when they went to plastic. I 
>> had one replaced on my 1995 Impala SS because when it got low on fuel 
>> the tank would partially collapse - resulting in a tow to home, and 
>> then it would be fine when it was backed off the tow truck. Heard it 
>> was a problem for several years until they made the tank stronger.
>
> I had a '69 Barracuda that sucked its gas tank almost flat after the 
> gas
> cap vent got plugged somehow.   Aggravating.
>
> I fixed it by first buying another gas cap, then I made a rubber 
> collar
> that fit the filler neck, drilled a hole through it, jammed it into 
> the
> filler neck and stuck my air hose in the hole and pumped the tank 
> back
> up til it went "plonk" and popped back into what was fairly close to 
> its
> original shape.  It only took about 5 PSI to do it.
>
> tony..
>
>
>  _______________________________________________
> This message was sent by the VirtualVairs mailing list, all
> copyrights are the property
> of the writer, please attribute properly. For help,
> mailto:vv-help at corvair.org
> This list sponsored by the Corvair Society of America,
> http://www.corvair.org/
> Post messages to: VirtualVairs at corvair.org
> Change your options: 
> http://www.vv.corvair.org/mailman/options/virtualvairs
> Archives: http://www.vv.corvair.org/archive.htm
>  _______________________________________________
>
>  _______________________________________________
> This message was sent by the VirtualVairs mailing list, all
> copyrights are the property
> of the writer, please attribute properly. For help,
> mailto:vv-help at corvair.org
> This list sponsored by the Corvair Society of America,
> http://www.corvair.org/
> Post messages to: VirtualVairs at corvair.org
> Change your options: 
> http://www.vv.corvair.org/mailman/options/virtualvairs
> Archives: http://www.vv.corvair.org/archive.htm
>  _______________________________________________