Sounds like mostly a temperature increase, but you may want to find your vent and see if it is plugged since you got a squirt when you opened the fill cap. If it was cold out when you filled the tank, the gas would have been denser and you wouldn't have had as much vapor. Then you put it in the garage, which is likely a bit warmer than outside air temps., and this made the gas produce more vapor which had nowhere to go if your tank has either no vent or a plugged vent. If it does have a vent, then gas should have come out of it when the pressure increased in turn keeping it from spraying you. The whoosh sound you get when opening a fuel cap is usually from a vacuum. If you have a fixed ammount of air and gas in a tank and no vent, then as you run the gas out you actually will pull a slight vacuum on that tank since it has no way of introducing new air to fill the space previously filled with gas. Hope you get it figured out. I don't know too many people that can afford to clean their garage floors with gas at these prices.lol
Reply With Quote