I bought my wife a 2002 trailblazer. I started it up and it ran fine. After I shut it down I put it up on its back end to wash the under body. After putting it back down I tried to started it about a hour later and it will not start. I have spark and fuel. I even tried starter fluid. Anyone have any ideas? I am going to pull the carb off and see if maybe the float is stuck. Any ideas would help.