None Runner

[IaninDorset]

A shot in the dark but could it be something in the stator breaking down under load or a failing pickup sensor that isn't quite gone but is being very intermittent when under load?

Perhaps a mag has lost its "oomph" inside the flywheel so the sensor is confused and not firing properly when under speed thus not advancing itself which in turn causes excess bog and blowback and you get flooding which kills the cycle.

[Bilko]

3 different stators, One's a BGM

[Wack]

Has the lighting circuit always been connected with the different stators?

[Bilko]

Yes

[Wack]

Try it without the stators lighting feed connected to anything.

[Scooterlam]

Good luck with this one mate,
Don't forget to let us know when it's fixed

[Bilko]

Try it without the stators lighting feed connected to anything.

Still the same.

[Wack]

Oh well that rules that out then

[Mr G in NYC]

Maybe ....

Silencer/exhaust blocked ?

G.

[Bilko]

Two different exhausts.

Thanks for the input by the way.

[Marty ULC]

mate I've a scooter restos upgraded SIL crank in the garage if you want to try it, used but was working fine before it came out.

[Fat Trucker]

As others have suggested the crank or the only thing on the list would be the Flywheel, easier to try before you totally strip it down to remove crank.

[Bilko]

Thank you Marty, appreciate it.

Not sure why I didn't try another flywheel. I'll have a go at that.

[Marty ULC]

I've a long-finned flywheel but it's un tested.
will call after work tomorrow old bean

can't have you missing Ballycastle, not had a beer with you for s VERY long time.

[Bilko]

Cheers Marty. Appreciate it. It's been a very long time! I've a spare flywheel here by the way .

[Bilko]

Tried another flywheel. Still the same.

Now to strip and try another crank.

[Paul Slack]

bad fuel?
Fuel filler cap breather blocked?
Oil filler breather blocked?
Spark gap?

[Bilko]

Thanks Paul.


Changed the petrol

Tried different cap

Cleared breather

Spark gap checked on numerous plugs.

[Paul Slack]

Weird.

Be interesting to see what this turns out to be.

All i can think of now is regulator, ht lead, suppressor cap or checking the power of the feed to the plug to make sure what looks like a strong spark, actually is!!

After that, I'm stumped. You appear to have changed everything else.

It's not flooding is it? Is the jetting right?

[Bilko]

No, not flooding, that was what I thought was wrong at the very beginning.

Changed everything. except crank and seals, which I'm in the middle of doing now.