2009 gv650 . Bad idea when hot

It’s most likely going to be carb related, fuel filter, debris in the carb etc in the low range jets. That’s presuming the bike runs fine if off idle

As per Simon ^

Also wanted to ask if your bike is EFi  & if so , what year and anything has changed over years  (either replacing or upgrading)

If its a carb model , go with what Simon said   (Me personally would look at the carb first, assuming it’s not because the coils/caps/reg-rec got hot)  (Some older 650s were bad for eating their regs but not their fault, as Hankuk didn’t do a great job with making them for Hyosung but sorry to digress)

Keep us posted!

Right that’s a little bit different, it’s going to be a process of elimination, my first check would be coil test & check for leaks on any of the vacuum hoses.

Dean wrote:

Hello gentlemen i have an 09 hyosung fi gv650 was running and ever since I disturbed the stator region it”s a no goer…. I would like to update my system inc regulator rectifier something that is compatible with the ecu wich is a s&t daewoo ecu…any recommendations..is there another ecu like a performance ecu i can upgrade to… Appreciate your input gents

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Got your email, so i will wait for your reply 🙂