(11-10-21, 10:29 AM)dueruote link Wrote: I had issues one time after filling a tank with E10 petrol and leaving the bike stopped for almost three months.
At the time I was not aware of the ethanol effects.
Results: Difficult to start up, uneven running engine, hard to pick up power particularly noticeable at low/mid rpm.
Carbs were dirty but fortunately there was no corrosion nor damaged seals, and the engine was running fine again after a cleaning and putting in a new fuel filter.

I would consider to take a look at that as well when you service the bike, especially if it has a history of using gasoline with ethanol, combined with long periods of winter storage, which I assume are usual in Norway.

(05-11-21, 09:25 PM)Captain Haddock link Wrote: I doing anything with the carbs Ivans jet kit is definately the way to go, forget dynojet, mine was so smooth all the way through once 'Ivanised'.While you are at it junk the AIS system too as it makes the plugs much easier to get to.