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Miss fire???? Help.
Posted:
Mon Sep 03, 2018 5:23 pmby 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.
Re: Miss fire???? Help.
Posted:
Mon Sep 03, 2018 5:39 pmby MickYork
spark plug ?
Re: Miss fire???? Help.
Posted:
Mon Sep 03, 2018 6:30 pmby Jimmyjames
no plenty of plugs.
Re: Miss fire???? Help.
Posted:
Mon Sep 03, 2018 7:10 pmby MickYork
HT cable
Suppressor cap
Broken/loose magnets in flywheel
Re: Miss fire???? Help.
Posted:
Mon Sep 03, 2018 7:23 pmby Jimmyjames
All have been checked and changed, flywheel changed as Well.
Re: Miss fire???? Help.
Posted:
Mon Sep 03, 2018 7:59 pmby ROClarke
Went down the same blind alleys with mine,turned out to head gasket.
Re: Miss fire???? Help.
Posted:
Mon Sep 03, 2018 8:17 pmby 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
Re: Miss fire???? Help.
Posted:
Mon Sep 03, 2018 8:48 pmby 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.
Re: Miss fire???? Help.
Posted:
Mon Sep 03, 2018 8:58 pmby Jimmyjames
Yes , causing the flywheel to run out of true and osolate .
Hitting the pickup.
Dame !!!
Re: Miss fire???? Help.
Posted:
Mon Sep 03, 2018 9:01 pmby MickYork
Flywheel bearing also a possibility
Re: Miss fire???? Help.
Posted:
Mon Sep 03, 2018 9:07 pmby Jimmyjames
Changed twice
There is small movement up and down when the flywheel is on.
This is normal??
Re: Miss fire???? Help.
Posted:
Mon Sep 03, 2018 9:43 pmby ULC Soulagent
No, get your crank checked for trueness
Re: Miss fire???? Help.
Posted:
Mon Sep 03, 2018 9:47 pmby Jimmyjames
Dame, if it's the only explanation I'll send it back to bgm.
Re: Miss fire???? Help.
Posted:
Mon Sep 03, 2018 11:03 pmby Toddy
Have you bypassed the loom maybe a bad earth in there somewhere damp ignition/ kill switch ?
Re: Miss fire???? Help.
Posted:
Tue Sep 04, 2018 2:54 amby Jimmyjames
No not tried that , what's the beat way ?
Re: Miss fire???? Help.
Posted:
Tue Sep 04, 2018 5:48 amby Toddy
Jimmyjames wrote: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
Re: Miss fire???? Help.
Posted:
Tue Sep 04, 2018 9:56 amby Jimmyjames
Thanks Toddy.
Re: Miss fire???? Help.
Posted:
Tue Sep 04, 2018 10:22 amby Rich Oswald
Carburation problem?
Re: Miss fire???? Help.
Posted:
Tue Sep 04, 2018 11:13 amby Jimmyjames
Definitely not the ingnition bypassed as Toddy said still the same .
Re: Miss fire???? Help.
Posted:
Tue Sep 04, 2018 11:56 amby Norrie Bodge
Is it Ducati CDI’s you’ve tried ?
As the cheap matsuyami ones are crap & break down under load