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hey this is my first time using this but I'm running out of ideas and money.... I have an 07 santa fe with 215k miles and this past winter it started running really bad ... rough idleing chugging missing ect. to this point I replaced the spark plugs ...ignition coils and crankshaft positioning sensor but still the rough chugging idle very little power during accel... ran scan and still says miss fire on cyl..2+4 I don't know what else to do ...any suggestions would be great..
 

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How long have you owned the car? Had any problems with the engine before?

I don't know what else to do ...any suggestions would be great..
Have you checked that the cylinders 2 & 4 ignition coils are actually producing a spark? That is something that's quick and easy to test if you haven't done it already.
 
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