Just like the title says I can crank and it will run okay until I touch the throttle. Then it will go completely dead, also when I am running down the road it will pop and hesitate but when it is warmed up it doesnt seem to do it much but stills happens some times. It's been a few months since I cleaned the air filter but it doesnt look bad. Also it will blow smoke right when I crank it but thats it. Any input is appreciated.