Miss fire???? Help.

[Jimmyjames]

Hi all am I missing something here??
3 stators ,
3 cdi,s ,
MB + A Tambs ingnition system.
Still feels like it's missing at high revs.
Any help would be great.
Cheers.

[MickYork]

spark plug ?

[Jimmyjames]

no plenty of plugs.

[MickYork]

HT cable
Suppressor cap
Broken/loose magnets in flywheel

[Jimmyjames]

All have been checked and changed, flywheel changed as Well.

[ROClarke]

Went down the same blind alleys with mine,turned out to head gasket.

[daniel whiteley]

I had it once on my old Yamaha 125 lc turned out it was big end on its way out so on hi revs it didn’t run right due
To movement

[Jimmyjames]

Big end bearing.
This was a new build only done 1200 miles , first issue I had was the mag race was loose on the crank.
This has been the start of the problem.
Send a than all new bearings .
The only thing not changed was the crank.

[Jimmyjames]

Yes , causing the flywheel to run out of true and osolate .
Hitting the pickup.
Dame !!!

[MickYork]

Flywheel bearing also a possibility

[Jimmyjames]

Changed twice
There is small movement up and down when the flywheel is on.
This is normal??

[ULC Soulagent]

No, get your crank checked for trueness

[Jimmyjames]

Dame, if it's the only explanation I'll send it back to bgm.

[Toddy]

Have you bypassed the loom maybe a bad earth in there somewhere damp ignition/ kill switch ?

[Jimmyjames]

No not tried that , what's the beat way ?

[Toddy]

No not tried that , what's the beat way ?

Just remove the green from the cdi which comes from the loom this will bypass your ignition
And loom

[Jimmyjames]

Thanks Toddy.

[Rich Oswald]

Carburation problem?

[Jimmyjames]

Definitely not the ingnition bypassed as Toddy said still the same .

[Norrie Bodge]

Is it Ducati CDI’s you’ve tried ?
As the cheap matsuyami ones are crap & break down under load