I opened up the ECU plug to find coil wires to test, cleaned everything up soaked w oil, opened up a shrink on the ignition wiring plugged it in and started it voila now good. Didn't see anything suspect. Put it back together we'll see how long it lasts
Ok when I put a 12v test light on the running cylinder #2 it lights up both sides primary+ & -. On the dead cylinder no light on -. Swapping the coils no change. That's why I checked continuity cyl 1 coil - to pin 22. I'm admittedly lost rn.
Thanks I should have mentioned the coil trigger wire is getting zero volts. It's not even trying to make a spark. I'm going to try to probe pin 22 at the ecu connector
No spark on cyl 1. Have power to coil and continuity from pin 22 on the ECU connector to coil connection/trigger wire.
ECU is bad? And it's discontinued.
Spark was intermittent before it finally died.