I just tried (with the engine running) unplugging just the low-voltage side coil of cylinder two and the engine stalled immediately (as expected). I restarted the engine and re-connected #2, I unplugged the low-voltage feed to coil #6 and the engine stalled immediately (as expected). I reconnected everything and tried that experiment with cylinder #4 - no change at all in the engine. I'm thinking the coil isn't to blame so much as it is the low-voltage wire that is feeding it. It's not giving it any power at all. Does anyone know what that voltage reading should be on coil feed #4 with the engine running? I even tried (with the engine running) moving the low-voltage feed wires around to cyl. #4 to see if the engine smoothes out - no change. This is so FRUSTRATING.

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