2008 santa fe #1 cylinder mis fire
when I start my santa fe it idles fine but after you drive it for a few minutes the engine light comes on and starts flashing ,when this happens it starts idling rough and when suv changes gears rpm gauge revs up, had a diagnostic check ran and it said #1 cylinder misfire changed spark plug and coil but still runs rough
http://www.obd-codes.com/p0301 -- check this out for possible causes and solutions.
Could be a bad fuel injector on that cylinder. Compression test that cylinder. If the compression is good (100psi or higher) start looking at that fuel injector. HTH. -Jim
Possibly scorched valve,compression test want show this,because there is no bent valve,to loose compression.Its just Scorched and will not fire.You have replaced all components.I think I would do the compression test anyway,but when it dosen,t show,anything this ii what it will be.
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