Quote:
Originally Posted by Jonny H
If it were me I would disconnect the CDI and look at the distributor signals across pins 7 and 31d at the 6 pin connector. On cranking, you should get a zero crossing 'jaggedy sine wave', maybe 10v pk-tp-pk. Post the trace if you can.
Having said that, on a Turbo the most common CDI fault is the signal input circuit failing. We get lots of boxes that still make the whiney noise but they do not fire at all or when the box heats up. Turbo is so cramped in there, hard for the heat to escape.
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I'm planning to do the pin 7 - pin 31/d tests today. I wasn't going to remove the CDI during the test but I'll give that a try.