Got my hands on this YT175, never put my hand on a two stroke before other than 50cc in my youth so pretty new to this.

At first glance it needed some carb cleaning, new cylinder/top end gasket and some welding to the exhaust due to massive leaks..

It is idling just fine now and pretty easy to start, but as soon as i touch the throttle it just bogs down and more or less starts to four-stroke. My first thought was crank seal and perhaps carb issue, so new seals and a after market carb but no difference and now i all out of ideas where to start. May this be caused by some electrical problem? CDI?

Hope I have made myself understood to some extent, English is not my native language as I come from Sweden.