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I have a 2005 hyundia sonata 4cylinder that has oil in the head when I pull out the spark plug. it is also miss firing 190,000 miles
\015 Has oil in the cylinders when I pull out the spark plug\015
Usually its a head gasket if not valve seals if the oil in the head is creamy thats antifreeze blown head gasket if it got to hot it will worp the head needs to be machined before you put it back together or worn out piston rings
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