Michael, the same thing happened to me once. I backed my car out of the garage, washed it, and pulled it back in. When my wife tried to start it the next day, it would crank really fast and would not even try to start. I thought the timing belt had broken. It was towed in and I soon was called that it was fixed. When I asked what had happened, I was told that it was flooded and had to have new plugs and an oil change (gas gets in the crankcase when it floods). I told the service tech what I had done, and he said that is exactly how it floods, and not to start it up and cut it off quickly, but to let it run a few minutes first because the fuel pump pressure is so high on the 850's that it takes a bit to burn off all the fuel from the plugs. I'd try 5 more plugs and change the oil then try and restart.