Hello there,
My 2009 wee-strom has been a great commuting bike, but something is playing up and I wonder if there are any pointers you can give as I've just had an expensive service/mot/replacement rear damper etc and can't afford to send it off to Docs again !
When cold, the bike runs fine. I have a 70min commute and after about 30mins any revs over about 5,500/6,000 give a sudden loss of power and terrible engine noise. Any heavy acceleration gets the same result. If I stop and leave it a few mins (fill up with petrol or go take a pee!) when restarting it is fine and I'm off again. No warning lights come on.
As it's just had a service with new sparks, battery, oil etc. my thoughts are:
Fuel filter - But surely the problem would be constant
Dirty tank - But the same?!
Mixture - I would have expected the issue to be much quicker than 30mins
Heated hand grips - sucking too much battery and not leaving enough to spark, but tried leaving off.
Dodgy HT lead - But would be constant.
Scott oiler - Some weird vacuum/pressure build up from the broken scottoiler (can't fill the damn thing up!).
I don't know !!! Any thoughts on where to begin would be great.