Having some real issues with my 125 at the moment.
When it's running, the I have to keep the throttle fully open to get any power from the engine, and the power I do get is really jerky. I have to keep the throttle on at around 30% for it to tick-over (I've played around with the idle speed screw, but it doesn't seem to have any effect).
I checked the air filter, which seemed to have a bit of damp in it so I dried it out and used some filter oil. Took the spark-plug out and the end had a load of black powder, which I believe means its running a bit rich. I took it out for a run after I'd done this, and its got back a bit more power (I can get up to around 30!) and it will just about tick-over.
When it's ticking-over, sometimes it'll almost cut out if I twist the throttle, other times it'll only increase the revs slightly, then really over-rev after I've let go:
https://www.youtube.com/watch?v=TE0x5sFrbLM
https://www.youtube.com/watch?v=NGTTf6Vdt7I
Any ideas of where to start solving the problem?
Cheers,
Tom.
When it's running, the I have to keep the throttle fully open to get any power from the engine, and the power I do get is really jerky. I have to keep the throttle on at around 30% for it to tick-over (I've played around with the idle speed screw, but it doesn't seem to have any effect).
I checked the air filter, which seemed to have a bit of damp in it so I dried it out and used some filter oil. Took the spark-plug out and the end had a load of black powder, which I believe means its running a bit rich. I took it out for a run after I'd done this, and its got back a bit more power (I can get up to around 30!) and it will just about tick-over.
When it's ticking-over, sometimes it'll almost cut out if I twist the throttle, other times it'll only increase the revs slightly, then really over-rev after I've let go:
https://www.youtube.com/watch?v=TE0x5sFrbLM
https://www.youtube.com/watch?v=NGTTf6Vdt7I
Any ideas of where to start solving the problem?
Cheers,
Tom.