when i removed the petrol cap from my williams fri, sat and yesterday to fill up there was a hiss sound as if a load of pressure had just been released from the tank! i havent driven it for a while but i don't recall this happening in the past.
the car has been of the road for 6 months, started and ran maybe once a month.
i ran it almost dry at one point. left it for a week, put a gallon of fuel in then attempted to fire it up. it would run for a couple of seconds hunt a bit then cut out. after putting another gallon of fuel in it ran ok.
i have replaced the fuel filter and theres no fuel leaks
any ideas or help would be great