Hi, I have just bought a 2010 WR250R.
The bike misfires pops then cuts out when held at about 1/4 throttle. It idles and revs up no problem.
It has a rewound stator, carb has been off and cleaned throttle pump its working well etc.
I have tried another stick coil. All connection sprayed and checked.
Valve timing has been checked.
Fresh fuel tried.
Exhaust is clear.
I have now ran out of ideas.
Any help would be welcome.