Help
I have a 15 veloster turbo with 122,000 Kms
For a year now I've been driving around with a misfire in cylinder 3. My mechanic swapped my coils between cylinder 3 and 2, code never transferred. Changed to high end spark plugs, Changed the fuel injector in cylinder 3 and code came back same day.
Been dealing with Hyundai dealership for 2 months now, originally when I first dropped it off they told me they couldn't figure out why it was misfiring because it wasn't misfiring for them. So I bring it back 3 weeks later (code came back 1 week after I got it back from them) , they tell me there guess is the fuel injector , which i informed them I had it changed in September 2025, they then argued its because I probably had a aftermarket installed and these cars dont like aftermarket - but I actually had a remanufactured OEM put in.
Same day I get my car back from Hyundai I get the cylinder 3 misfire code PLUS cylinder 2 misfire code.
Misfire happens only sometimes, when it misfires the gas pedal is all the way down - but again not every time
Any ideas on what I can do to figure out what's going on??? Or if anyone else has experienced this