I have 2000 xcr 800 that appears to have a fuel line off somewhere inside the fuel tank. The red line that comes out of the tank to the on/off switch is connected to the tank but if I pull vacuum on that line there is just a vacuum noise coming from what appears to be inside the tank. The tank is half full. I just got done adjusting the suspendsion and putting on new shocks so it was in the air, I put it down and now I have this problem. Does anyone have a diagram I could look at or any advice on where to look? Thanks for your time.