Exhaust smoke using remote start

[cossack]

4 hours ago, MikeNH said:

 

The black smoke is far more common on GDI engines. Occasionally I'll see it on port injected engines but on all the vehicles I rented when I traveled for work (40+ cars a year for 9 years) anything with GDI and a remote start would burp out some smoke when started on cold days. 

How fuel is introduced in to the combustion chamber has no effect on black smoke. I'll agree to disagree

[MikeNH]

4 hours ago, cossack said:

How fuel is introduced in to the combustion chamber has no effect on black smoke. I'll agree to disagree

I'm not pulling this out of thin air-

 

3rd paragraph:

https://phys.org/news/2016-07-gasoline-direct-green-choice.html

 

2nd paragraph:

 

http://articles.sae.org/13624/

 

Google GDI particulate emissions and you'll get plenty more results. Not saying GDI is a bad system- you generally get better MPG and a more responsive engine but they make more soot and this is an undeniable fact.

 

 

[Deadeye]

Thanks for the replies. Didn't notice on my 2009 but much different technically on these new ones. 

 

I noticed quite a bit of black from the weep hole of the muffler and thought the engine may be running rich. Mentioned it when it was at the dealership for other issues. He said the tech looked at another truck on the lift and it was the same as mine. Asked if any codes were present and he said no. Makes me wonder if they checked.