I bought a 2005 Ds50 two stroke in very nice shape. Has original tires in like new condition. It seems to be low houred but had sat for a long time. At least 2 years, but probably more as I didn’t know the original owner. After a new battery and a carb clean it ran great. Took off fast, revved up to full rpm as it should and drove real well. Exactly as you would expect it to. After 5 or so minutes it starts to bog down and seems to only rev to 1/4 or half throttle. Auto choke has already been unhooked so it’s not that. Any suggestions on what to dig into next?

 

Auto chokes on most Chinese tiddlers are set so choke is on all the time, unless power is going to it. Disconnect those wires and the choke will be on all the time. Power for them is usually AC, direct from alternator by the way.

 

After digging into it further, I found a completely plugged spark arrester. I removed it and it is running much better now