Forums 🚥 PiT STOP 🔧 Hyosung Technical Help Miss and backfire under 5k only after engine warms up – 2009 GT650R Reply To: Miss and backfire under 5k only after engine warms up – 2009 GT650R
Mar 12, 2025 at 12:11 AM
#19101
Mine is efi. When cold it idles perfectly and revs normally/responsive. As it gradually warms up, the revs slowly drop until it gets to 1,000-1,100. That’s when it starts to play up. At least it doesn’t seem to stall now. Sometimes when I rev when the engine warms up, the engine will make like a weird clunky noise. I will check out the tps today as well.