Hi I have a yerf dog go cart. When i got it the carb needed adjustment(i think) I messed with it for days and finally broke down and bought a used carb after finding out that the Eton viper 90 uses the same motor that is in my cart but the electronics and wiring were different. The carb i got was off of a eton viper. I put it on and got it runing after a little tinkering made one lap around the field and it lost spark so I ened up buying a hole new wiring harness and all the electronics for the eton viper. Now it will fire but it will not start it acts like it wants to start but wont. I think maybe its getting to much fuel but im not sure. If anyone can help it would be greatly appeciated