That's good advice from Gian. Except number one, thank your God that, having a floor covered with gasoline, it didn't ignite your car, your house, and you. If you think about it, there are only a few components to the fuel system (relatively speaking). The tank, the lines toward the front, the filter, and the lines to the engine. . I would bet that, if you put the car on ramps/stands and wheeled under it (while on a clean floor) you'll be able to find the leak in under 5 minutes, because it sounds like it's leaking a fair amount. Like Gian said, I think it's as simple as a fuel line or connector. Now get to it. You'll be finished in no time. Good luck to you.