Forums 🚥 PiT STOP 🔧 Hyosung Technical Help Issue E.C.U hyosung gv 125cc – GV125-S EFi Reply To: Issue E.C.U hyosung gv 125cc – GV125-S EFi
Can you elaborate on what it is actually doing from the moment you turn it on ? and how much of a mood is it in while riding before it gives up ? So i can point out what the issues might be. Even information on how it idles on stand still ?
What colour are the spark plugs ? are the CR8E or some other code name etc..
Did the coils change? (rear one fails commonly, so do a swap test)
Does it have black HT caps ? (get rid of them and use NGK ones!) – Nothing but trouble those things
Your ECU is discontinued, it’s the early type (circa 2017-2018) , before they all changed to the updated delphi units including all wiring harnesses changed (not backwards compatible) and most sensors changed. The fact that it runs (even starts the bike) means not all hope is lost on that unit. So i would address it as last item to worry about
// Meditation doesn't mean you have to sit still....