[Healeys] Fuel bill up in filler pipe

[Keith Bailey]

Hi Guys
            When I park the car at a display for a few hours in hot sun I get
a vapour build up pushing fuel
            out through the filler cap.It was suggested I vent the tank by
fitting a nipple at the left top corner
            of the fuel tank and running a pipe back to the fillet pipe to
vent of vapour I an not sure of this idea
            what are your thoughts.
            Regards Keith