Lumpy idle

[Murray Arnold]

Hi All
Finally got all the Fluids ,Plugs,pads,clearances done and throttle bodies balanced but still not convinced that she isnt idling like my last R12s.Its only the idle, runs well after about 2000rpm Seems like its running on 1.5 cylinders The other R12s I had with exactly the same setup was way smoother on idle
A BMW tech suggested that if the problem still persists after changing plugs and setting gap and balancing Throttle bodies it may be the part number 4 in the attached photo but its a $300 part so Im just putting it out there to see if you guys have any other ideas or do it just bite the bullet
Bike history 29k Bike sat for 12 years full dealer service history one owner
Injectors look good and ive put a cleaner through them also
Thanks for the help

[Droptarotter]

What happens when you shut the bike off and restart?
Seems like you have the annoying 12S lumpy intermittent idle problem??

Mine does it when it wants to and seems to go away when I reset the stepper motors, but maybe part #4 could be the problem???

There are many discussions on this.

Cheers

[Swamper]

Put some miles on it.

[Murray Arnold]

Yeh did think that