I have a LT 250 or 92 to stroke dosent idle bogs down has great spark carbs emaculately clean jets clean when I purchased it it started first kick but after 2nd test ride it spun it flywheel nut off causing no spark I fixed it to regain good spark but now it bogs and dies if I let throttle off only runs right at half throttle only any less dies bogs and dies any more same backfire sputtering and dieing dosent kick start needs to be pulled and jumped to start and kept at half throttle runs normal WTF is going on

 

I would replace the plug if you haven't already. These old 2 strokes can be hard on plugs and it is a cheap thing to try. Fresh gas wouldn't hurt either. Have you double checked your work when reassembling the machine? How about the carb? All the parts back in properly if you have had it apart?

 

Yep tries b7 -b9 non restricted and non brandnew everytime fresh gas and what kills me is it ran fine right before I sent it to my fathers friend to fix the spark now when I kick it over the spark is strong I just can't figure it out I cleaned the jets too carbs spotless Thx for the reply