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Discussion Starter #41
Sort of got an update today. Hyundai requested a fuel sample, which had already been done and came back okay, as well as for any misfire codes, which as pointed out there have never been any codes in the car. I guess at least we have people asking for more information at this point!

They have the oil sample results and can see the elevated Iron, aluminum, chromium and silicon so hopefully once they have the fuel sample results and know there are no misfire codes, we'll make some real progress! I've asked for someone to look into why no codes were set when the cat failed even though the car was still somewhat operational as well as why no codes were present the first time the cat failed and the engine was damaged. Hopefully I can get some answers.
 

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Hopefully my last update. We got the car back today with a new short block. The mechanic said when he took the engine out he found a spun bearing with a lot of debris in the oil. He said the oil was very thick. Not sure if this was caused when the cat failed causing the back pressure but this is what he found. The engine is nice and quiet now! All told Hyundai covered 80% and my out of pocket was only $650. I guess I can't be too upset since the car was out of warranty. I'm still a bit concerned about what caused the cat to fail so quickly. They didn't reflash the ECU so it's still running the same tune. I'm considering a cat delete but don't want to do anything until the 12/12000 engine warranty is up.
not a Veloster owner but i have "17 accent and had to get my engine replaced. After my engine was replaced i had check engine for my main cat not doing so well. I see more accent owners in hyundai forum complainting about cat going bad ( P0420 code )
 

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I too have a 2016 Base model and at 14408 miles I had a clogged catalytic converter, I lost all power, it went no where. Towed to the dealer (under warranty) at the dealer the service writer jumped in turned it on, put it in gear (went no where), put his foot into and car started blowing white smoke BAD!!!
 

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I too have a 2016 Base model and at 14408 miles I had a clogged catalytic converter, I lost all power, it went no where. Towed to the dealer (under warranty) at the dealer the service writer jumped in turned it on, put it in gear (went no where), put his foot into and car started blowing white smoke BAD!!!
So any determination on why the cat clogged up? I assume it melted right? Unless you had a defective cat they normally overheat when too much oil/carbon and or unburnt fuel stick to the honeycomb. Did you tune it or mode it? Let us know what happened? Is yours is a NAV?
 

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2013 Kia Rio Sedan Auto 1.6 Turbo
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Man, all that is crazy. Before I swapped my rio, it had the same NA 1.6gdi. I had 160k/mi and the only thing I ever did was change spark plugs.

I live in the mountains, and gave it plenty of revs regularly. No oil catch can, no valve cleaning, nothing. Hell I still have the engine and trans full assembled sitting in my car port here in SW Va.

It burned 1/4 of a qt every 3k mi since 30k/mi. Once a week I put 93 in it, and every oil change some lucas in the gas tank.

Car always ran good. Factory coil packs, original cat.

My big question would be, did you guys always run fully synthetic? I have been told by reputable sources it burns cleaner. I always did.
 

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2014 VT manual
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most folks go to the dealer to get an oil change and unless you request it, they won't put synthetic in but they will put the change interval anywhere from 3500 to 5000 miles.

i don't run synthetic but the oil and filter is always changed between 3000-3500 miles depending on when i can get an appointment :) i know it sounds silly that i have the dealer change the oil, but it's like $5 more for them to do it and i get a free wash and vacuum as well.
 
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Hopefully my last update. We got the car back today with a new short block. The mechanic said when he took the engine out he found a spun bearing with a lot of debris in the oil. He said the oil was very thick. Not sure if this was caused when the cat failed causing the back pressure but this is what he found. The engine is nice and quiet now! All told Hyundai covered 80% and my out of pocket was only $650. I guess I can't be too upset since the car was out of warranty. I'm still a bit concerned about what caused the cat to fail so quickly. They didn't reflash the ECU so it's still running the same tune. I'm considering a cat delete but don't want to do anything until the 12/12000 engine warranty is up.
How did u get Hyundai to pay for it when the warranty expired. I have the EXACT SAME ISSUE right now with my 2017 Hyundai VT 1.6 engine and have got the run around since. I still owe about 8000 on this car and can't afford a 5000 engine swap. I'm very pissed and frustrated.
 
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