Originally Posted by lisala433
the deep scoring on the piston and cylinder walls was at the 2 oiling ports in the cylinder
If you are running a 16:1 mix then it shouldnt be anything to do with the mixture. Have you checked the colour of the spark plug - anything grey or white means overheating - you need a nice tan/brown colour. Running a two stroke lean will quickly kill a motor.
Since you have done such a small mileage it might be worth talking to the supplier because it sounds like fault in the motor.
define what you mean by 'rough' - if there is scoring on the inside of the cylinder then it might be from the rings or something being wrongly installed inside the engine. I assume by the term 'shelled' you mean broken?
glad to see you on the forum
"....Look, no pedals... *thud*..." The mating call of the motorized-biker.
"RetroEagle" - 32cc Two-Stroke, Piped. 35mph on #13 gear. Reversed stem with springer fork.