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kellcats521 kellcats521 is offline
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Join Date: Feb 2005
Location: Atlanta Metro
Posts: 219
The CDI box has an output of ~460V ac. This is why it has all of the warnings on it. If you're not getting that at the coil (white wire), there's no way that you can get a spark at the plugs. IMO it is fried. Most folks swap to an MSD or Crane CDI setup rather than buying a new or rebuilt Bosch. Search the 911 technical forum for threads on this - it is cheaper than buying an Bosch, and not hard to do.

And, if you do swap out your Bosch box for an aftermarket unit, I would like to try and diagnose it - I have 2 other bad ones here that I'm looking to rebuild.....

Pat K
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Old 08-21-2007, 07:25 PM
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