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Re: fuel system vapor recovery (?)

To: "ROBERT G. HOWARD" <mgbob@juno.com>
Subject: Re: fuel system vapor recovery (?)
From: Paul Hunt <paul.hunt1@virgin.net>
Date: Mon, 18 May 1998 20:24:11 +0000
ROBERT G. HOWARD wrote:
> 
>   Yesterday was warm and sunny in coastal CT, about 75 degrees in the
> parking lot where the '72 GT had spent the day outside.  (Preparing for
> British Car Week, lest the insurance company inquire)
>   I started it up about 3 pm, and drove about 100 yards down the road, at
> which time I smelled gas and the engine started stumbling.  Another 100
> yards of stalling and coasting until I could get off the roadway, then
> opened the hood.  Fuel was flowing from the adsorbtion cannister. Fuel
> pump was not pumping.
>   Pulled off the line from the tank to the cannister--seemed to be dry.
> Removed the gas filler cap and a load of fuel sprayed onto my pants.  Let
> everything dry out, started up and drove on home. At idle the engine
> sounded as though it was running rich, which is probably true since it's
> sucking up gas fumes from the cannister, but again the fuel pump was
> operating normally, the engine was running OK, but this time no fuel
> appeared at the cannister.
>   Isn't the little grey tank inside the right fender supposed to allow
> for expansion of gasoline on a hot day? Much as I like the smell of
> gasoline on the carpets and the thought of it flowing around the
> sparkplugs and distributor, I should probably do something to avoid a
> repetition of this event.  What should that be?
>   TIA
> Bob

Clausager says that by August 1970 all North American cars had an area inside 
the tank that normally held air but would absorb fuel expansion to prevent what 
you experienced.  It also had the effect of reducing capacity.

PaulH.



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