Black Smoke on Hard Acceleration - Kia Cadenza Forum
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post #1 of 21 (permalink) Old 10-24-2015, 04:51 PM Thread Starter
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Black Smoke on Hard Acceleration

Anyone getting any black smoke on hard acceleration? I don't gun it much, but did today and was embarrassed by the black smoke I produced. Car behind me even switched lanes.

See video:

https://youtu.be/gJkx37bt2nU

I was able to replicate this on the same trip as the video, but the smoke was not as bad as the video (first time).

Assume this is just a GDI engine thing, but don't think it should be doing this. I generally use Top Tier Fuel (not always), but have used Techron at the prescribed intervals.

Anyone else's doing this?

Last edited by Yooshaw; 10-24-2015 at 04:58 PM.
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post #2 of 21 (permalink) Old 10-24-2015, 07:36 PM
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Interesting. I'll check mine and let you know.

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post #3 of 21 (permalink) Old 10-24-2015, 08:16 PM
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I have noticed the same with my 2014 Cadenza. It doesn't always blow smoke but sometimes if I floor it I've noticed it.
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post #4 of 21 (permalink) Old 10-24-2015, 08:18 PM
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I just noticed you were pulling onto Bayshire Blvd....I live in Tampa too. Nice to see a fellow Cadenza driver in Tampa!
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post #5 of 21 (permalink) Old 10-24-2015, 08:34 PM Thread Starter
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Originally Posted by K7Rich View Post
I just noticed you were pulling onto Bayshire Blvd....I live in Tampa too. Nice to see a fellow Cadenza driver in Tampa!
Nice Rich! Although I moved here a couple of months ago from the DC area (I'm military), I was born and raised in Tampa, so it's great to be back home.
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post #6 of 21 (permalink) Old 10-24-2015, 10:52 PM
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Yup can confirm, black smoke here as well.
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post #7 of 21 (permalink) Old 10-25-2015, 01:40 PM Thread Starter
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Originally Posted by brandontaz2k2 View Post
Yup can confirm, black smoke here as well.
Thanks for the confirmation, not happy about it at all, it's embarrassing to me, like I'm driving a hoopty.
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post #8 of 21 (permalink) Old 10-26-2015, 12:36 AM
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Thanks for the confirmation, not happy about it at all, it's embarrassing to me, like I'm driving a hoopty.
Yup very embarrassing, almost as bad as the rattle every start up
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post #9 of 21 (permalink) Old 10-26-2015, 12:43 PM
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It is pretty normal on GDI engines as you suggested.

However you should not be able to duplicate it over and over again.

It usually happens when there is carbon build up and you have not floored it in awhile.

Once you've done it a couple of times back to back, it should not still continue to happen. At least not with the Optima anyways.
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post #10 of 21 (permalink) Old 10-26-2015, 10:12 PM
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Originally Posted by Yooshaw View Post
Anyone getting any black smoke on hard acceleration?
Anyone else's doing this?
Well I tried mine out this afternoon and, yes, I got a nice black cloud. I got to thinking, in "the old days" (yes, I am older than dirt) we used to have a common expression like "It needs to have the carbon blown out of it". Now this was not a factor for me when I was driving my Oldsmobile 442, as it saw redline as often as possible. Well, I'm a little older and cars have changed. I look at the Tach on the Cadenza and it always seems to be 1500-2000 RPM. My wife would not "Punch it out" if you paid her! I guess what I'm saying is that for me, I'm going to "Blow the carbon out" with some form of frequency. I'm sure there is some design feature of the GDI engine that contributes to this but I don't know how you would find this out. Let me know if you have any ideas, hopefully ones with some science behind it.

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