Hi, I have a CBR 250 R, i am in the UK
When i start my bike from cold, no choke. Then take it for a run i seem to lose power. For example the other day i was on the bypass doing about 100mph for about half mile in top gear with throttle fully open and they bike started to slow to about 8000rpm and when i tried to go down a couple of gears. they just seems to be no power and it just didn't sound right, like it was running on 3 cylinders
Problem disappears if i go to a mates, turn bike off, wait 30 mins and then reappears when we go out for a run.
I gave it to a mate to have a run on and give me his diagnose as its a electrial issue.
The bike got new oil, oil filter, air filter, new plugs and new HT leads last year. i have only done a couple of hundred of miles as they bike gets stored for the winter.
So i took the spark plugs out they were dry, wired brushed them and cleaned the
coil pack contacts
and the little bar they sit on
and the earth wire near the bar.
Took it for a small run and i think the problems gone. Weathers been rubbish to go for a longer run.
My question is are my coil pack on their way out? or is it something else?
Link to you tube of me starting my bike