Reply To: GT650R Fuel Pump Fault
Hey
From what i learned. It primes as soon as the key turns on.
When you press start and bike runs, the pump also runs (sort of at constant rate). It is the ECU that decides when it should turn off
I believe one of the service manuals has an Flow Chart of how the efi system works on hyosungs
But it turns off when the bike falls (roll sensor) or the owner turns keys off or ECU has error FI displayed to save itself.