I took off the tank today and most likely found the reason: the connectors inside the rubber cover on the right side of the frame were quite wet and couldn't dry because of the cover. Haven't tested yet though.

I've also got an issue with oil consumption, although I rebuilt the engine 6000 km ago and now I'm thinking whether to take off the cylinder at my friend's workshop to see what's going on or not.

L�hetetty minun GT-N7100 laitteesta Tapatalkilla