Forums 🚥 PiT STOP 🔧 Hyosung Technical Help GV 125 S Valve clearance Reply To: GV 125 S Valve clearance
Oct 3, 2025 at 5:33 PM
#20946
Hi Marcel
Sorry for the late reply, i finally got round to making a video
After i did an oil change, with filter, i noticed the front manifold gasket was not ok, so i had an air leak, new gasket installed
It definitely sounds like the valves, not so much the front cylinder, the rear cylinder is definitely too loud, annoying when riding as i am sitting right on top of it.
Have a listen and let me know what you think
I used the selfie camera so the mic is right on the cylinders, that’s why the video is mirrored, and she at Temperature, warm
Thanks mate
Barry