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Discussion Starter · #1 ·
Anyone else think the exhaust from our cars smells different from other vehicles on the road? I usually like the smell of running vehicles (I know, I'm weird like that) except diesel but our exhaust somehow smells different. I'm not saying it's bad, just that it is different and I wonder why. Maybe that helps contribute to soot? My nose is sensitive but I think others should notice it as well.
 

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Read the post on black smoke and you will understand the smell, I think. Not big but yes I can tell also.
Does this because of direct injection.
 

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Discussion Starter · #3 ·
I've never smelled another direct injection engine smell like this. And yes, I'm part of the discussion on the black smoke thread. I would just like to know the cause, they may be linked sure, but why is it this way...
 

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don't know why but seems to be on the Cadenza more than other cars. We have a K900 also
and never smells . Don't get any where as much soot either
 

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Discussion Starter · #9 ·

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On every Cadenza? o_O
Some how I missed the first part of this thread and thought it was an isolated incident. My bad. I'm editing my comment to prevent confusion.

But to address the issue, it could be the type of cat kia used? Has anyone brought this issue to kia cooperate? I know if there are enough complaints they are more likely to look into it and address it if it's an actual problem
 

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Discussion Starter · #11 ·
I believe I've asked the question somewhat in series with "Why does the engine rattle?" before, never called about it specifically. Would getting new catbacks possibly help isolate the issue? I thought it would have to do with the engine more than anything. I know the exhaust system can help burn more soot but I didn't know it could alter the smell, thought that was just the combustion (which is why most gas engines from lawn mowers to V12s smell the same and most diesels smell the same). Cars aren't my area of expertise :)
 

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I noticed the issues with white smoke during colder weather, but its excessive compared to my other cars...

So I added a No Smoke engine oil to help seal pistons from loosing gasoline in the chambers... it seems its worked.. the smoke reduced drastically and there was more engine power...

cant comment on the smell, but overall its reduced the smoke...
 

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Discussion Starter · #13 ·
The white "smoke" in colder weather is usually due to heat/moisture. The smoke we are talking about is darker and caused by soot buildup. I can't imagine an oil like that helping in the winter time for seeing exhaust. Either way I'd like to know what is causing the soot, that will tell us why we have black clouds sometimes when we floor it.
 
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