Reply To: Rear cylinder problems GV250 efi
Do you have a video of this ? (upload to youtube / onedrive / googledrive and post link here) so we can see what is happening.
And have you done tests to the coils and tells us :
1. Primary and Secondary resistance of the coils
2. Swap the coils , see if the front coil works on the rear better?
3. Do you have NGK caps ? (Sometimes stock caps will cause sparking issues) or just use another standard Hyosung cap again or SV650 ignition cap and try again.