Reply To: GT250 EFI DSpec Stalls at Idle after Warm Up
Thank you very much Sam for a very, very interesting report. I would never have guessed that throttle misalignment would effect stalling/sputtering. May I ask if your bike model is the FI version? The reason I ask is that the manual I have, which I assumed applied to your bike, is for the 250FI. According to that manual, the 250FI has most of the sensors of the EFI models but NO TPS sensors. Strange.
Turning to my setup I am trying to understand how throttle misalignment can affect stalling at idle. The reason I say this is, at idle both throttle valves are completely closed and all the air needed for combustion at idle is led into the engine by means of 2 separate pipes feeding into the carbs at the engine side of the throttle valves. Air flow into these pipes is controlled by a single ISC motor. This to me implied that the throttle is completely bypassed at idle. Your report indicates otherwise.
I wonder how I can go about synchronising the carbs. I have no such equipment.
Regards
joe