we had one of those same said  vapor lock problems " back in the day" 
when we owned a 64 T bird  which  had a 390 in it. it was not until 
after we shut down a third time and a NYS trooper  asked what the 
problem was. . He said" watch me" he opened the gas cap" and said " 
try it". then  the following week a  dammedable  power pole jumped 
right out in front of that Bird, I swear it moved  and made a nasty  
deep dent back to the engine. same trooper  investaged the accident 
and asked if it was" vapor lock from  gas fumes or  beer fumes" end of 
story.Lee


 On Thu, 
Feb 21, 2008 at 08:07:03PM -0500, 
clifford wrote:
> Dear List members:
>     Back in the twentieth century, when I took physics, the reason given for 
> vapor locking was that the fuel pump would only pump a liquid, and if the 
> engine got too hot, and at that time the fuel pump was attached to the 
> engine, the liquid fuel would become a vapor when super heated and the pump 
> would stop working.  The answer to immediate relief was to cool the fuel pump 
> with water or let it rest.
>     I am not sure, but I would think that a filter would let a vapor pass  as 
> easily as a liquid?
>     Placing an electric fuel pump in the fuel tank, has eliminated vapor 
> lock, at least the old fashioned type.
> 
>                 Yours Truly,
> 
>                 Clifford Wilson
> 
> [Non-text portions of this message have been removed]
> 

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