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  1. MD (2011-2016) Elantra sedan/coupe
    Got a P0304 Cylinder 4 Misfire code and am having poor fuel efficiency and a rough idle. I changed the plugs and ignition coils, no change. Swapped the cylinder 1 and 4 fuel injectors, still cylinder 4 misfire. I checked resistance on all four fuel injectors and they're all the same. What are...
  2. DM (2013-2019) Santa Fe
    I have a 2013 Santa Fe 2.0t AWD with 135,000 miles. About a month ago I started getting a misfire code P303 and the engine was running rough. I swapped ignition coil #3 for #2 and the problem went away for a couple days. Then it came back with a misfire on 3 & 4. I couldn't drive it running so...
  3. General Hyundai Non-Model Specific Discussion
    Hey everybody. I have a 2008 hyundai Santa Fe with about 64,000 miles on it that stopped while driving it a couple of days ago. The engine literally stopped running and will not start: the engine will turn over but, nothing else, I mean it just won't start. I have never had a problem with it...
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