Stumbling SP-2 ... sometimes ...
So, I have worked slowly through all the small issues the bike still had, and, besides of the re-paint, everything is fixed.
However, I remain to have one problem which I am not sure on:
If I ride on the road, and the bikes is warm to hot, if I ride it for a while in the middle rpm's, and I suddenly accelerate, the bike stumbles.
Like it does not get enough fuel, a bit like overheated carburetors and a vacuum lock on classical bikes.
If I run through the RPM range once or twice, it is over.
And the strange thing is, I had the same problem on the way and back to a track day, but not during the three sessions.
The bike is pretty standard, with a fresh air filter and fresh plugs (changing the plugs did not solve the problem), and does not have a PC.
The fuel lines are free, not squeezed.
I wonder if this is fuel-pressure related, or caused by other things?
Any suggestion is welcome.
Last edited by ericjansen; 06-13-2012 at 06:38 AM.