With all the warm weather here, I wanted to start up my Vette and go for a boot, but after connecting the battery back up, the car won't start. It turns over but thats it. There is almost half a tank of gas in there, and I could smell it after popping the hood. I checked all interior and exterior fuses and nothing is fried. It used to start in half a second before. What could it be? I didn't touch it or do anything before letting it sit for a month.