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hotdogwater hotdogwater is offline
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Join Date: Aug 2013
Location: Lakewood Colorado
Posts: 67
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Need help, no spark on 70T.

I am trying to start this 1970 911 T that sat for many years(14+). I replaced all the fuel components and rebuilt the carbs and now tackling the ignition system. I have no spark and trying to figure out how to resolve without throwing parts at it. Just a note, you can't search for the term "no" on pelican so this one was hard to research so if there are some good old no spark procedure/forum posts please point me to them.

- can hear hum(more like whine to me) from CDI but reading on PP forums this does not guarantee the CDI is good
- I get no 12v+ at the coil with ignition on
- replaced coil even though I have no 12V+ at the coil
- Car has a Marelli distributor so I was going to swap out for Bosch and electronic ignition but found the parts for the marelli for a reasonable price (not my issue but might impact overall resolution I though)

I was going to swap for Bosch and use Pertronix but I didnt pay close enough attention to the part numbers and ended up with a Bosch dizzy for a 2.4L engine (again prob not related to current issue). So without throwing parts at it, can I put my meter on the CDI and determine if it's functioning?
Recommendations to fix the issue and provide reliability (replace Marelli with Bosch and electronic ignition?)

Thanks in advance for any advice.
-Daryl
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-70' 911T -in resto - (runs after 25+ years)
-74' 914/4 - race car - SOLD -
Old 06-27-2017, 09:18 AM
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