melissaphoenix5
Hyundai H1 engine misfire
Summary of the thread
A 2021 Hyundai H1 with a gasoline engine is experiencing rough running, stalling at idle, a check engine light, and jerking during acceleration. The issue is suspected to be a defective ignition coil, possibly related to a cable or plug connection. An error code indicates a misfire on cylinder 3, confirming the suspicion. Replacing the faulty ignition coil resolved the problem, with the connector also found to be slightly corroded.
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4 comment(s)
melissaphoenix5 (community.author)
Yeah, the error code points to a misfire on cylinder 3. Pretty sure it's the ignition coil, but I'm wondering if there's anything else I should check before replacing it?
mikablitz1
Misfire on one cylinder definitely points to the coil. In my experience, wouldn't waste too much time looking for other causes. If the code is clear and symptoms match, might as well get it to a shop to confirm.
melissaphoenix5 (community.author)
Right you are. Replaced the ignition coil, and that did the trick. Turns out the coil was faulty, and the connector was a bit corroded, exactly as expected. Cost me 95€ Thanks for the advice!
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HYUNDAI
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H1
mikablitz1
Sounds familiar. I had similar symptoms with my old Opel Astra. Rough running and stalling. Was a pain. Have you checked the error codes? Could be a misfire.