Mike_hawk

Like the title says, I have one cylinder that isn't firing. Engine is an lq4, with factory harness in an 82 stepside. When I changed headers I noticed my #3 cylinder's spark plug was black(carbon), but all others were light tan/white. The primary tube on that cylinder was also not getting hot on #3, so I swapped the coil with #1, and #1 was still heating up/working. I swapped the plug wires with #1 and #1 was still heating up/working, then I replaced the #3 sparkplug with a new properly gapped one and #3 still doesn't fire. I checked the pink wire to #3 coil and it had 12v, I was thinking of hooking up an inductive timing light to see if it's making a spark, but I'm out of ideas after that. How do I check the signal going to the coil to see if there is a wiring issue or something else?