Forums 🚥 PiT STOP 🔧 Hyosung Technical Help Sparking Issues / Rough Idle on GV125-S Aquila [SOLVED] Reply To: Sparking Issues / Rough Idle on GV125-S Aquila [SOLVED]
Mar 21, 2026 at 10:04 PM
#22135
seems to be OK, doesn’t look burnt or even bent , so i would also next time check the intake system any splits in the air lines , and the intake manifold o-rings themselves if issue continues, a dead iscv wont even allow the bike to start and idle. I had to replace an ISCV from someone’s older 2015 GV which is totally different from yours but the bike screams for 1 second, then dies right away. As soon as a new one was fitted, it idled OK. I found out the ISCV unit was soaked in water, bike was left to rot outside without a cover, that poor thing but i digress!