[maxpower85]

My forte5 has black smoke from exhaust at startup, what could be the problem? My friend saw that today when I started the car.

 

[Kneegradamus]

Is it only @ cold start?
Either way I wouldn't make a big deal out of it unless you have other issues that follow
Black smoke would be a rich mixture
Depending on the combination of climate and type of fuel your using can be a contributor

 

[precrack]

You should probably turn the adjustment needle in one full turn on the carburetor to lean it out some. Or make sure there is not excessive grease on the muffler bearings. Orrr just listen to kneegradamus he is probably more accurate.

 

[GotBoost?]

All hail king @Knee

 

[rick021808]

Lmfao @precrack
I have not noticed black smoke with the kia but with my old cobalt ss when it was extremely cold in morning it would really roll coal on start up and idle a little rough.

 

[Kneegradamus]

Where do you fuel up?
Do you use the same place every time?
Whats the condition of you spark plugs?

 

[Forte5]

Also the condition of the oil. My inlaws car does the same thing if she drives past the service interval. It does it only when cold

 

[maxpower85]

It was pretty cold this weekend.. Around -20C (-4F).. I dont go always at the same gas station.. But I always put 91 the max I can find here.. About the spark plugs I doesnt look..

 

[Kneegradamus]

It was pretty cold this weekend.. Around -20C (-4F).. I dont go always at the same gas station.. But I always put 91 the max I can find here.. About the spark plugs I doesnt look..

Ok -4.. Wow f that. Noooo thank you.. Lol
Either way I would not worry about it
I would say giving the temperatures and the fact we are dealing with direct injection, it's seems quite normal to me.
Cold start as it is with a DI is going to run richer for a short period of time, and with the addition of colder temperatures the mixture will be even richer for a short period of time until cylinder temperatures get up to normal. Even further more we run rich from the gate

 

[maxpower85]

Thanks, i'll continue to monitor that! But the car runs very well..

 

[[email protected]]

Some black smoke at cold start and wot is pretty typical. Cold start because it is dumping fuel to get the cat up to temp. The Wot stuff is just because it runs super rich and is more of a soot then anything

 

[ProphetOFC]

...it's a cold day in San Diego at 66...you poor bastard, I couldn't imagine -4. I feel so lucky I have good motorcycle weather all yeat