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Registered
Join Date: Aug 2015
Location: Cologne / Germany
Posts: 707
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Quote:
Originally Posted by Aurel
I tested my rebuilt distributor, and still get no spark at the plugs…very frustrating!
Then I wondered if the coil was weak, I swapped with another one and got the same.
Now I am starting to wonder if all my coils are bad, so I measured them all on the bench:
Primary secondary
My old Bosch 0.17 ohm 835 ohm
MSD blaster#1 0.12 ohm 1210 ohm
MSD blaster#2 0.12 ohm 1180 ohm
It seems like the secondary resistance is low on all these coils. I know it should be 4.5 kohms for the MSDs. So should I get a new coil?
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Get a little cheap oscilloscope where you can measure the dizzys sensor output
https://hackaday.com/2017/11/09/review-jye-tech-dso150-oscilloscope-kit/
Thats how it should look (from another oscilloscope model)
If the signal is ok then you should check the cdi output, but here you need a high voltage probe and check in the www the correct approach for measuring.
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911 SC 3.0, 1982, black, US model – with own digital CPU based lambda ECU build and digital MAP based ignition control
All you need to know about the 930/16 and 930/07 Lamba based 911 SC US models:
https://nineelevenheaven.wordpress.com/english/
Last edited by AndrewCologne; 05-14-2025 at 02:29 PM..
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