2011 Hyundai sonata - $2,800 (Port Orchard)

2011 Hyundai sonata Cold ac recently completely redone New Tires New brakes Car runs very well when driving but has a check engine light on currently and shakes at idle. I changed out the spark plugs but that did not fix the problem. I’m not going to bring it to a mechanic and pay for a diagnostic so bring your mechanic if you’re concerned. I took it to auto zone and they said it was a misfire on cylinder 3 and it could mean a few different things so I’m done after the spark plugs. I’m not a mechanic and ready to move on however like I said it runs completely fine when driving just shakes at idle You can text me at fur8zer0-5furnin-9ateatefur If the post is still up then it’s still available As is condition