Hi.I have a dirt bike with loncin engine and it just worked fine for 1 year with no big problems...but my old spark plug broked so i bought new(not the same cause i couldnt get it) and now engine jerking at the high speed...top speed before was 95km/h now its around 50km/h...write any solution...
i cant find any name or numbers on the engine so i need help to figure out who created that engine cause i need a new spark plug but i cant get a spark plug which fit in my engine almost nowhere.the only one i get was NGK D8EA but i think it is getting too hot and engine dont work properly when...
