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Just to add this information which might make a difference: The ignition system is the EDI 'enhanced distributor ignition'
The haynes manual is missing some of the the trouble shooting sections for this type . section 5-6 is missing the EDI part and 5-7 references that missing info. haynes has not yet responded to my inquiry about that (last week.)
I think part of the key to solving this has to do with the fact that this is EDI. Whenever I see trouble shooting like at easyautodiagnostics it looks like it for the HEI not EDI.
for example they show this
but my coil connection does not have that middle wire which is the tack signal.. So where does the tach signal come from on EDI?
Also, all the wiring diagrams I find are probably NOT for EDI.
Anybody familiar with the nuance that is kickin my hinder?