Today have I done some work.
First I took picture of all spark plugs, please see picture here:
temp.dynamitt.net/div/MC/plugs_05082017/
Then I took of the carbs and adjusted the needle, it was in middle position so I lifted it one step.
Then I re assembled everything and started up the bike, I took the bike on a drive where I have had experienced these problem before, long hills (under water tunnel), where I can drive for a long time stable on 5, 6 and 7k RPM, the test went really well, no time I experienced the problem.
I think the problem is solved now! let`s see over time, but I`m quite confident on it.
Thank you all for your inputs in these matter !
So the problem has been that the carbs has not been able to delivery a stable amount of gas because the vacuum was to low?
There it has worked perfect during acceleration and when running on flat road and downwards?
