Bonneville Fueling

Thanks for the tip, I'll try it on my 2018 Speedmaster (same engine). Seems strange if it's traction control causing the jerkiness, being as that's most likely to cause tyres to loose traction.

 

Well found sir.
Could it be that a sensor is on its way out?

 

Where is the speed sensor, might need cleaning especially if near the front sprocket?

Edit: Probably not relevant in this case, apologies

 

They're next to the slotted metal rings attached to the side of the wheels, the rings are usually (?) on top of the brake disks. They use magnetism to count the slots as they pass and I doubt very much that dirt would affect them.

Edit: If anyone gets tempted to remove the sensor for cleaning, make sure to take note of where the washer thing goes if there is one. On my bike, the 'washer' is actually a spacer that goes between the sensor and the bike frame, not a washer going between the bolt head and the sensor.

Edit again: I assume the wheel speed sensor is also used for showing road speed of the bike, and ABS operation, so if there was anything wrong with the sensor it seems likely you would get an ECU and/or ABS warning light. (like you do at startup until the wheels have rolled and the ECU knows the sensors work).

 

Brown Mouse
I found out about that one. Luckily it didn't damage the sensor when it was rubbing on the disc.
Joe.

 

I only remembered to try this yesterday. For me, turning off traction control makes no difference to the jerkiness of the throttle response.