Good lord. I read through this whole thread wondering when the hell someone was going to quit pissing over the spark plugs and mention the injector. Check for 12 volts and injector pulse on the ground wire to actually isolate the injector. If both of those are present, try tapping on the injector while its running.Ok, I went out and wiggled wires, then I figured, what the heck, I'll try unplugging the injector wires. Well, I unplugged the first one and didn't notice any change what so ever. Plugged it back in and unplugged the next one, and there was a definite change. I took a video but you really have to listen to hear the change. I can hear it better with my ear then I can on my phone. The phone pics up the fan noise making it harder to hear. Anyway, I think I may have a bad injector?