Could be a few things... Almost sounds like and ignition problem and the coil is grounding out or cutting off?! Maybe unhook the ground to the coil and try a test run.. See if it cuts off.. Or the Carb... lol! Maybe clean it out or buy a new one.. That stock carb costs like 12 bucks on E-bay... The Walbro 803 that EPR always suggests might be a good first upgrade... just peek around the site all kinds of Mods for that engine... Same as the X1, X1, Zenoah..
The Smoke is good....... unless you are not mixing 2 stroke oil in the gas... Get 100% synthetic 2 stroke if you want less smoke... Those mufflers are ghetto if you want to quite it up you might have to get a HP muffler then make sure the packing is good or make a huge can with lots of muffler packing... lol
All i can really say for sure is the muffler on that thing is real bad...
Good luck!
The Smoke is good....... unless you are not mixing 2 stroke oil in the gas... Get 100% synthetic 2 stroke if you want less smoke... Those mufflers are ghetto if you want to quite it up you might have to get a HP muffler then make sure the packing is good or make a huge can with lots of muffler packing... lol
All i can really say for sure is the muffler on that thing is real bad...
Good luck!