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Injectors and plugs at the same time. Sent from my iPad using Tapatalk

Thanks everyone for the info. I have a bit more info to add I just checked the ohms on the coil rail and they all matched. I also pulled the plugs back out and the number 3 piston has more carbon build up than the others.

I haven't pulled the plug back out since I replaced it. Sent from my iPad using Tapatalk

The plugs are new and I checked the spark on coil rail. Is there a better way to test the coil rail. Thanks for replying. Sent from my iPad using Tapatalk

I have a 2204 Jeep Wrangler TJ Sport 4.0 liter never had any major issues with it in the past 8 years I've owned the jeep. We had a cold front come through and I had to replace my water pump, heater core, and radiator. Ever since the engine has been idling and running rough and I have been...