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CDI or the bike?

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If I understand this right, the early model XR650Ls were more prone to CDI failure. What I haven't been able to figure out is, were these earlier models more prone to CDI failure because the CDI units were more likely to fail . . . or is there something systemic with the bike that causes the CDI unit to fail?

If the early model bikes are seen as the cause, are there any fixes? Or are we just talking a batch of CDI units that weren't as good of quality as they are now?

Thanks!

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It's the CDI itself, not the rest of the bike. Replacing the CDI with a new one fixes the problem. '93 and '94 models seem to have the highest likelihood of spark problems being caused by a failing CDI.

Not many people do a post mortem on their dead CDI, but the few I have seen photos of appeared to have failed at the solder joints, most likely from vibration.

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Here`s a few threads to look at......

http://www.thumpertalk.com/forum/showthread.php?p=9224217#post9224217

http://www.thumpertalk.com/forum/showthread.php?t=877754&highlight=

As for earlier models being more likely to fail,not sure i agree with that,,could be i guess......what i`ve seen though is it seems to be almost mileage related,which really is time related..the constant high current flow through the cold solder joints causes breakdown over time,,which equates in mileage...

Brian

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