So I just finished a lot of tinkering with my carb trying to get jetting and mixtures correct and thought I finally had it. Started easily good throttle response and hauled donkey on my thirty second test run. The next day I took it for a longer run an after like ten minutes it began to lose all power at higher rpms when I rolled into it like it would sound the same but I’m going half as fast as I should be and it would cut out completely if I hit it fast and it was backfiring a lot. I assumed maybe I had jetted it when it wasn’t completely warmed up. But isn’t backfiring usually associated with running lean and if I jetted it to run well when cold then I would have a rich condition once it’s hot right?

So I just finished a lot of tinkering with my carb trying to get jetting and mixtures correct and thought I finally had it. Started easily good throttle response and hauled donkey on my thirty second test run. The next day I took it for a longer run an after like ten minutes it began to lose all power at higher rpms when I rolled into it like it would sound the same but I’m going half as fast as I should be and it would cut out completely if I hit it fast and it was backfiring a lot. I assumed maybe I had jetted it when it wasn’t completely warmed up. But isn’t backfiring usually associated with running lean and if I jetted it to run well when cold then I would have a rich condition once it’s hot right?