My sled acts like it is not getting fuel. It has spark and compression. Both cylinders fire but on the PTO side there is nothing on the plug, but it is firing. The only way to get the sled to start is but dumping gas into the cylinders and even then it's a PITA to keep it running. It runs like complete crap and we tried to see if it would move and it shot up to 5000 RPM's and didn't want to go, put it on a track stand and got it to go. What could be a possible solution to this? I just pulled the VES valves they need to be cleaned bad, maybe this has something to do with it? I took the fuel pump off to check and make sure it was ok. Maybe I messed up there? I should add too that it will only stay running by touching the throttle, let it go and the the idle drops and it wants to die.