DT125R FORUM

@Calum Not leaking any fluids. No more smoke than the regular twostroke. Also a knew airfilter is fitted.

Hey guys, so i got my 2006 DT125X about a month ago. It has ran perfectly except a couple of fouled plugs (2-3).
But yesterday it started missfiring around 6000RPM and i cant get over it. The bike starts jerking but it doesnt feel like a carb issue. I thought it was just another fouled plug so i changed that out to a NGK BR9ES. I also cleaned the carb for good measures but no luck. I can also hear the powervalve priming when turning the ignition on.

What could it be?