Baffling Critical Engine Failure Experience

NJStinger20

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Hey all,

First post and it will be fairly long. I leased my GT-Line 2020 Stinger in September of 2021 and have liked the car a lot more than I anticipated. Up until Monday I have had no issues with the vehicle other than a persistent windshield sealant strip that pops out of the front dash since I took delivery.

On Monday I had a job over in Brooklyn which I had been to every week day during the past week. It’s a 49 mile trip each way mostly highway. Monday was rainy with a little snow in the morning so roads were wet but it was light with no significant water accumulation on roadways and no storm drain back ups. I was on my return trip driving in traffic about 20 miles from home when all of a sudden I noticed the vehicle cut all engine power, a huge cloud of smoke was behind me on the highway and the oil and check engine lights were on (no shuddering, shaking or jerking proceeded the shutdown). I was understandably shaken, going about 60 in the fast lane and managed to coast across four lanes of traffic to safely get to the side of the road and into a parking lot. Smoke was still coming from under the hood so I popped it and saw a steady stream of oil flowing from the engine block side of the turbo (below the heat shield) to hit the turbo housing and burn up (source of smoke). After it cooled and pressure dropped no additional oil was seen leaking and when I checked the dipstick there was still oil in the crankcase (and viscosity felt normal). I waited 3 hours for Kia roadside to come and tow to the dealer.

When I arrived to the dealer we checked everything in and I explained what had occurred thinking it was a blown oil seal, turbo or oil feed line and the engine must have cut out when the pressure dropped catastrophically. The next day around midday, after hearing nothing, I called and was informed that I had somehow pulled water through the stock air box and into the intake manifold which hydrolocked the engine. I am currently waiting to have this resolved but based on the bare minimum of inspection performed by the dealer I’m skeptical of the diagnosis and concerned how something like this could have happened without driving through a 10”+ puddle. So now it comes down to a he said she said situation and I am still awaiting any response from Kia Corporate or the dealer.

I have not seen anything in these forums about a similar situation but as someone who worked in a dealer as a mechanic and on the parts counter I cannot come up with a reasonable sensible explanation as to how this could have happened without me noticing, especially with the vehicle operating continuously for an hour prior to the incident with no indicators of any issue until the car died.

Very curious to see what the collective mind here thinks. I think I am going to get screwed and end up having to eat an engine replacement (hopefully through insurance) but I am convinced it is not hydrolocked and the bound motor is due to some other critical failure related to the oil loss.
 
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Welcome. You bought a used car or was it sitting on the lot a year? Regardless, it is still in warranty through 60K miles for a subsequent owner of a previously owned/leased vehicle. Unless you are above that mileage, of course. An engine replacement will be covered otherwise, since there is absolutely nothing to show that you did anything to the car. And yes, you didn't find anything on the forum describing this because you are a unicorn. Sorry.
 
Welcome. You bought a used car or was it sitting on the lot a year? Regardless, it is still in warranty through 60K miles for a subsequent owner of a previously owned/leased vehicle. Unless you are above that mileage, of course. An engine replacement will be covered otherwise, since there is absolutely nothing to show that you did anything to the car. And yes, you didn't find anything on the forum describing this because you are a unicorn. Sorry.
Hey Merlin, thanks for the welcome! It was last years mode new old stock on lot that says for a bit probably. I’m currently sitting at 33,133 on the odo. The dealer basically saw water in the bottom of the air box and on the air filter then peeked the phone camera in the intake pipe that goes into the intake manifold and said “yep there’s water in there” no borescope or anything to verify the diagnosis other than taking them at their word.
 
Ask the dealer to show you the page in the manual that states “thou shalt not operate in rain”.
I basically said it was ridiculous for them to tell me I drove through enough water at 60mph (slowing and starting with traffic) that I instantly hydrolocked it. I’m more of the mind set that they bound it trying to restart it with no oil remaining in the head or cylinders. See above comment, they basically did nothing to verify their diagnosis and are now digging in and putting it all on me.
 
From interior to exterior to high performance - everything you need for your Stinger awaits you...
If the engine hydro-locked something should have broke, such as a connecting rod, piston and/or a hole in the block. I do not think it hydro-locked…espescially with a stock intake. Stock intakes are designed so that they do not ingress water.
 
I’m more of the mind set that they bound it trying to restart it with no oil remaining in the head or cylinders. See above comment, they basically did nothing to verify their diagnosis and are now digging in and putting it all on me.
That's possible.
 
I basically said it was ridiculous for them to tell me I drove through enough water at 60mph (slowing and starting with traffic) that I instantly hydrolocked it. I’m more of the mind set that they bound it trying to restart it with no oil remaining in the head or cylinders. See above comment, they basically did nothing to verify their diagnosis and are now digging in and putting it all on me.
So I take it that the engine is now seized and will not turn over. That is indicative of oil loss and not a hydr-lock.
 
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I basically said it was ridiculous for them to tell me I drove through enough water at 60mph (slowing and starting with traffic) that I instantly hydrolocked it. I’m more of the mind set that they bound it trying to restart it with no oil remaining in the head or cylinders. See above comment, they basically did nothing to verify their diagnosis and are now digging in and putting it all on me.
Call and open a case with KiaCorp.

Their explanation is asinine.
 
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Call and open a case with KiaCorp.

There explanation is asinine.
I have opened a case but still waiting on a response from corporate. In addition to throwing this on me they have also not initiated communication with me at all since the car was brought to them.
 
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From interior to exterior to high performance - everything you need for your Stinger awaits you...
So I take it that the engine is now seized and will not turn over. That is indicative of oil loss and not a hydr-lock.
Correct, they even say in the video walkthrough someone tried to start it and they couldn’t turn it over manually with a bar. That’s my thought too, I remember dealing with hydrolocked vehicles at Nissan after Hurricane Sandy and none of them experienced oil loss and smoke burn off they sucked water in like a straw, sputters and died.
 
Here’s the extent of the “proof” that its hydrolocked pulled from the dealer service video.
Photo 1- wick line of moisture on stock paper filter
Photo 2- clearest photo of thrown codes provided
Photo 3- photo of bottom of air box (below filter)
Photo 4- best view of intake manifold piping claiming it’s got enough water to lock to engine
 

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The only thing those photos prove is that they can't operate a camera.

If the air filter isn't dripping water, there's no way enough is getting through to hydrolock unless there's a design flaw.
 
The only thing those photos prove is that they can't operate a camera.

If the air filter isn't dripping water, there's no way enough is getting through to hydrolock unless there's a design flaw.
That’s my reaction as well and that no one involved at the dealer level seems to care enough to give my concern any weight is extremely frustrating.
 
That’s my reaction as well and that no one involved at the dealer level seems to care enough to give my concern any weight is extremely frustrating.
As others have posted several times recently, dealers are very hit miss with Kia. Once this is resolved, you may want to find another shop if there's other dealer options nearby.
 
From interior to exterior to high performance - everything you need for your Stinger awaits you...
This thread reminds me of why I skipped on the late model rdx. They have an issue with moisture getting into the intake during very humid or raining conditions and full throttle.

Edit, supposedly fixed in MY '21 and newer, but still some reports.

Agreed, one should be able to drive this car in stock form in the rain without issues.
 
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As others have posted several times recently, dealers are very hit miss with Kia. Once this is resolved, you may want to find another shop if there's other dealer options nearby.
There most definitely is and I’m already looking. It’s sad because this is the fourth vehicle I’ve personally serviced with them and never had a bad experience before this which adds to the frustration, not to mention my wife and her families dealings with the same dealer for sales and service.
 
This thread reminds me of why I skipped on the late model rdx. They have an issue with moisture getting into the intake during very humid or raining conditions and full throttle.

Agreed, one should be able to drive this car in stock form in the rain without issues.
Any car should have no issues in stock form in foul weather. That’s where the baffling part came in, I’ve driven this vehicle through much worse weather conditions (varying levels of rain and snow) with no issue at all so why now? I hope I can get the ear of someone in Kia who also wants to know why something like this can happen. They are making me think I’m crazy with this whole situation as if almost causing a pile up and being out the vehicle isn’t enough.
 
The dealer sounds like they are full of it. I have K&N drop-ins in the stock air box and JA scoops on the front. I have been through all kinds of foul weather including rain and snow, and never had a problem. Just last week I opened the airbox to check the filters, and there was no sign of any water ever getting in there. There was some dirt and pieces of a couple leaves, but that is what the filters are for.
 
I have the Velossa Tech Scoops and AEM Intakes. I drove last month for 3hrs in the rain with constant spray hitting my car from other vehicles in front of me with no issue at all. Unless you submerged your car there is no way enough water could get in the initial air intake box into your engine compartment, seeing that the air only enters in the top which is right under the front bumper in the picture where the X's are.
 

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