Dear friends, My name is Predrag. I contact you from Serbia. I own Hyosung Aquila GV 250, 2004 Please, help me about LEFT HANDLE SWITCH for my motocycle. Thank you everybody and all the best. Predrag

Question edited for clarity.
Question moved from Cars and Trucks category.

It is called surging and is normally caused by air leaks on the inlet manifold.

https://www.google.com/search?q=2014+hyosung+gv250+surging

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Change or clean the fuel shut off valve

http://printfu.org/hyosung+gv250+manual


SERVICE MANUAL 0KB

4 BL: Black with Blue tracer BBr : Black with Brown tracer BG: Black with Green tracer BO: Black with Orange tracer BR: Black with Red tracer BW: Black with White tracer BY ...
http://www.hyosungmotors.hu/download/pdf/data/service-manual/GV250-GT250-EFI-service-manual.pdf
--> black, tracer, white, orange, brown

You need to check the voltage of the battery after charging it. It may have become so discharged from leaving the ignition on that it will not recover and will have to be replaced.

yep same bike different years alpha sports and hyosung used to be one company then split in 04 alpha sports became tomberlin and hyosung became hyosung motors usa