Black smoke coming from exhaust at high revs. - Kia K900 Forum
 
LinkBack Thread Tools
post #1 of 7 Old 01-13-2016, 05:46 PM Thread Starter
Junior Member
 
Join Date: Jan 2016
Location: Florida, USA
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Garage
Default Black smoke coming from exhaust at high revs.

hi i have the k900 v8 version and i notice that in normal mode if i punch the gas the car would leave a cloud of black smoke or if in sport mode it leave some black smoke at high revs about 5k to 6k rpms. i wonder if anybody else notice the same or if it is normal? i use shell 93 octane
ivanoea is offline  
post #2 of 7 Old 01-13-2016, 06:08 PM
Member
 
OneFunK900's Avatar
 
Join Date: Jan 2016
Posts: 37
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
Default

Hi,

good observation. I would believe this would be "soot" as it is know around the car world that is produced by gas direct inject (GDI) engines. There is nothing wrong but it can stain the bumper of lighter color cars. Usually a little soapy water and it will come right off.

2015 Kia K900 Luxury with VIP Package. Bright Silver on Black
OneFunK900 is offline  
post #3 of 7 Old 01-13-2016, 06:25 PM Thread Starter
Junior Member
 
Join Date: Jan 2016
Location: Florida, USA
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Garage
Default

yeah the staining is annoying, i was thinking that it was running too rich on fuel, that maybe a K&N filter will help with that
ivanoea is offline  
 
post #4 of 7 Old 01-13-2016, 06:53 PM
Junior Member
 
Join Date: Nov 2015
Posts: 24
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
Default

I wouldn't think a K&N air filter would make a difference in the air/fuel ratio. Everything is controlled by the engine control module. Even if you took the air filter the ECM still determines how much fuel to inject. Allowing more air into an old carburetor engine will change the A/F ratio but the K900 has a direct injected engine.

David
Charlotte, NC
FunonH20 is offline  
post #5 of 7 Old 01-16-2016, 12:22 AM
Senior Member
 
K5 Optima Store's Avatar
 
Join Date: Jun 2014
Location: Los Angeles, CA
Posts: 195
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 41 Post(s)
Garage
Default

I noticed the same thing on mine the other night under WOT!

This is normal for GDI engines from what I understand.
K5 Optima Store is offline  
post #6 of 7 Old 01-16-2016, 02:34 PM
Member
 
Join Date: Nov 2015
Location: Pacific Northwest
Posts: 99
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
Garage
Default

I did notice this as well on our Cadenza but not on our Sorento. Both were '14 with GDI. Have not seen it on K9.
Ptrs is offline  
post #7 of 7 Old 01-17-2016, 12:43 PM
Super Moderator
 
Gene's Avatar
 
Join Date: Jul 2015
Posts: 377
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 86 Post(s)
Garage
Default

traveling behind a lexus two days ago. He punched the gas to get around some cars,
left a much bigger cloud of black smoke than my car has ever had
Gene is offline  
Reply

User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome