2016 Hyundai Sonata my spark plugs keep misfiring cylinder 1 P0301 corroded on plug I have to clean corroded off

I'm Dusty from RepairPal's Car Genius team; I'm here to help! If your Sonata consistently misfires on cylinder 1 (P0301) and you find corrosion on the spark plug every couple of weeks, is a sign that there's an underlying issue. Repeatedly cleaning the corrosion is treating the symptom and not the cause. Sometimes, issues like this require a thorough diagnosis by a professional to pinpoint the exact cause. This will help get your Sonata running smoothly and reliably again. If you have any other questions or need help locating a RepairPal Certified shop in your area, please don't hesitate to contact us! 877-913-1554