May need to clean the plugs first to get it to fire and when it does do not let i die till she quits smokin or u may have to clean the plugs again.Also u may wanna run it till she heats up and cleans the cat converter back off from the soot from the 2 cycle(nasty soooty stuff)that 2 cycle is.Also a couple of full throttle on ramp assaults will help remove any soot from the combustion chambers. anytime I can justify a full throttle on ramp assault i will and do!!