This is general car knowledge. An 04 kia probably has individual coils for each plug on the valve cover. Remove the screws holding the coil on the valve cover, gently pull/twist off (stuck like a cork) plugs should be down deep in cylinder head. Modern engines have iridium (100,000 mi) plugs. Yours could be this ,check the stickers in engine bay.
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This is general car knowledge. An 04 kia probably has individual coils for each plug on the valve cover. Remove the screws holding the coil on the valve cover, gently pull/twist off (stuck like a cork) plugs should be down deep in cylinder head. Modern engines have iridium (100,000 mi) plugs. Yours could be this ,check the stickers in engine bay.
Try to look on top or sides of the head of the engine. ok