tobiaskoenig8
SantaFe engine knocking power loss
Summary of the thread
A 2020 Hyundai SantaFe owner is experiencing engine knocking, power loss, jerking during acceleration, and occasional smoke. The issue might be related to deposits in the combustion chamber or pre-ignition, and an error code was detected using an OBD2 scanner. Possible causes include combustion-related problems or a faulty knock sensor. The suggested solution is to take the vehicle to a workshop for a professional diagnosis and repair.
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4 comment(s)
tobiaskoenig8 (community.author)
Pre-ignition, huh? I'm not sure I know much about that. How would I go about checking for that, or the cylinder heads, for that matter? Could it also be a faulty knock sensor? I'm kind of lost on where to even begin, and I really don't want to get ripped off by a mechanic if I can avoid it. Any pointers would be great.
nicosmith8
Honestly, pre-ignition is just a guess, I'm definitely not a mechanic. And checking cylinder heads? That's beyond my limited skillset. I'd be too scared to mess something up. The knocking sound is concerning though. My issue ended up being combustion-related and expensive. If you're getting smoke too, that really points to something combustion-y. I think you should probably take it to a workshop, I did the same. The repair cost was 425€, so be prepared.
tobiaskoenig8 (community.author)
Thanks a lot for the input! It's good to know someone else had a similar experience with their SantaFe. I was hoping it would be something simple, but it sounds like I'm going to have to bite the bullet and take it to a workshop. I appreciate you sharing your experience and the estimated repair cost; at least I'll have a ballpark figure in mind. I will let you know how it goes.
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HYUNDAI
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SANTAFE
nicosmith8
Wow, that sounds rough. I have a SantaFe too, though I don't know the year, and I had a similar issue a while back. Mine was also jerking and felt like it was losing power, but I didn't notice any smoke. I never checked for error codes myself, but the knocking sound you're describing...could it be pre-ignition, maybe? Have you checked your cylinder heads? I'm no expert, just trying to share my experience.