Forums 🚥 PiT STOP 🔧 Hyosung Technical Help Inconsistent rpm at idle, stalling + jerky acceleration GT250 EFI 2010 Reply To: Inconsistent rpm at idle, stalling + jerky acceleration GT250 EFI 2010
Hello everyone!
Just to remind you the bike is still running with the makeshift mechanical ISCV not the original part.
So a few updates, as Marcel requested:
1. I have checked the compression on both cylinders and they seem to be even, I don’t know the recommended values so if you can please let me know.
Front Cylinder showed a compression of 175 psi / 12 bar / 12.2366 kg/cm²
Rear Cylinder showed a compression of 175 psi / 12 bar / 12.2366 kg/cm²
2. Throttle position sensor (TPS) on my bike is a 1 bolt type and it has been checked, it showed a reading of 1.09V on closed throttle and 4.45V on full throttle I believe that is in spec though I would appreciate if you could confirm this value.
3. The pipes leading from the Idle speed control valve (ISCV) to the throttle bodies have been checked and they don’t have leaks.
Unluckily I haven’t checked the resistance of the ignition coils & the plug caps, so I will do that next time.
Thank you everyone!