Ok, so I've just started to "refurb" my new 97 xc440. When I first got it, last week, it started and ran fine. So it sat for a week with the fuel shut off in the on position. I go to start it today and put the choke in the first position, and give it a pull. It sparks right away and then dies. So i pull the plugs and check the spark, it has great spark. I notice that the plugs are wet, so its definitely getting fuel. So the engine acts like its flooded and i only pulled it over 5 or 6 times before i pulled the plugs. How can an engine be flooded that fast? So i let it sit for 15 mins and give it a shot again. Nothing happens still flooded. I do this several more times, all within an hour and a half. At this point i decided to move on and replace the front shock, so i pulled out the exhaust to access the shock tower, and the pipe is filled with gas, about 3 or 4 cups of it. What the hell? How can that much gas have made its way into the exhaust? Can gas flow into the engine from the carbs, even if the throttle is closed and the sled is off? I can't understand how the sled would have A.) been flooded so fast and B.) have that much gas in the exhaust. I wonder also if the crank case is full of gas as well. I didn't pull the drain plug in the bottom of the crank to check yet. I pulled the carbs apart to check for blockages in the main and pilot jets, but it looked clean. If you have any advice please help!