I have a 2010 Yamaha YZ450F. I had some problems with it cutting out while I was riding. I took it into the shop n they told me it was the fuel pump going out. I replaced the fuel pump and the problem was solved. Then about a week later it started doing the same thing. I took it in and they told me the electronic connectors were wet n needed cleaning. So they did and again it ran fine for about a week. Now it just died out on me on the track n won't start back up. Every once in a while it will fire up for about 2 seconds then cut back of again. What in the world could this be?