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Discussion Starter #1
Hi all I have an old school 89 zx10b. The bike runs but is flat due to a weak spark. Tested continuity and resistance and all wiring and the coil packs are both good. CDI unit? Wondered if anyone had come accross this problem before. Thanx for any input.
 

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Check your grounds and change the plugs. If it's running flat, are you sure it's not lean?
 

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Discussion Starter #3
Earths are all good and plugs are brand new. I've extracted each plugs individually and earthed it and the spark is so weak it doesn't even bridge the gap. Gaps are good too. Thanx for ur input dude.
 

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Coils bad hun? Not sure..
 
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