P0305 Code A Step-by-Step Guide to Diagnosing and Repairing Ignition System Issues

I pulled the code P0305 for a cylinder 5 misfire. I changed all of the spark plugs with OEM Denso and new NGK wires and coil packs. I am still getting the same ... I see I have the dreaded "P0305 - Cylinder 5 Misfire Detected" code. What is there left to do besides replace the coil packs and plugs? I've just noticed a flashing engine light, ruff idle and lose of power. My scanner is giving me P0305 which I believe is #5 cylinder misfire. If you get the OBD-II scanner error code P0305 problem, you can know that the fifth cylinder is not firing correctly. They just blindly follow what the trouble codes tell them, and fire the parts cannon at it. Have you noticed a loss of coolant over time, by ... I took it to autozone pulled the code and it said misfire cylinder 5. So I thought maybe I have a bad plug or dirt in the plug so I replaced it ... Ford Ranger - Misfire on cylinder# 5 (Code: P0305) - Ford Ranger, 3.0 Misfire on cylinder# 5 - changed plug on # 5 Still misfiring on # 5 ... I have been having issue with my car misfiring. The code I get is consistent "P0305". I switched over the spark plug and full coil pack from cylinder 5 to 6 ... 2010-2014 Mustang - Mustang Season Woes-Code P0305 - So I decide to go out for a Saturday cruise about ten minutes ago and what do I see? I keep getting a P0305 code on the #5 cylinder. I swapped the plug (no arcing on existing) with a new NGK 6510 / LTR7IX-11 and gapped at .032 per 5 Star.