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Old 11-25-2020, 07:40 PM   #3
leecatd8209
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Join Date: Jul 2015
Location: South Texas
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Quote:
Originally Posted by bobxyz View Post
The pictures posted here
https://www.msextra.com/forums/viewt...?f=101&t=70950

shows that the J702T ignitor is not a true logic-level ignitor, but needs high current drivers. The wasted spark board uses a ATtiny24A chip, which probably can't reliably supply enough current and, over time, burns out.

Try using a different dual ignitor, or a pair of the standard Bosch ... 124 ignitors.
But the Buchka board is fine, no issues there.

Here's another wrench in the works. I have retained all of the other stock ignition wiring. Should I be removing the stock power stage? Maybe the EZK is working double duty to fire both? Because I definitely have spark at the coil until I unhook it for the dummy relay for the tach to work. This is literally the first I've considered this.
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