Q7 4.2l, Question about black smoke during initial start - Audi Forum - Audi Forums for the A4, S4, TT, A3, A6 and more!

Q5 - Q7 For the Q5 and the new Q7

Q7 4.2l, Question about black smoke during initial start

Reply

 
 
 
Old 05-19-2011, 09:53 AM
  #1  
Audi Forum - Posts like an A1
Thread Starter
 
Fuselfarz's Avatar
 
Join Date: May 2011
Location: Canada
Posts: 8
Fuselfarz is on a distinguished road
Post Q7 4.2l, Question about black smoke during initial start

I'm driving an Audi Q7 2010 4.2l V8 and for quite sometime, I have noticed that every morning during my initial start, black smoke is coming out of my exhaust.

Youtube video can be seen under Titel: Es wird immer schlimmer

I have brought this up with my local Audi Dealership. However, even after a few attempts trying to have this problem rectified, I'm still left with the black smoke.

Audi's technician's explanation is that it's not the car but rather the gasoline I'm using. Audi is in the car manufacturing business and not in the petrol business. Therefore, Audi can't be made responsible, if the pumped gasoline, creates such an excessive dark discharge. I'm pumping Shell premium with 91 octane.

Please let me know if anyone else has ever encountered this problem, and if so, how was it rectified.

Thanks for your attention to this matter.
Fuselfarz is offline  
Reply With Quote
Old 05-19-2011, 12:26 PM
  #2  
Audi Forum - Posts like an A4
 
Join Date: Dec 2010
Location: Toronto
Posts: 126
LMcQueen is on a distinguished road
Default Re: Q7 4.2l, Question about black smoke during initial start

To help rule out if it's a gasoline issue, try a different Shell station; a different octane, or; a different company (e.g. Esso, PetroCan etc.)
hope this helps.
LMcQueen is offline  
Reply With Quote
Old 05-19-2011, 01:26 PM
  #3  
Audi Forum - Posts like an A1
Thread Starter
 
Fuselfarz's Avatar
 
Join Date: May 2011
Location: Canada
Posts: 8
Fuselfarz is on a distinguished road
Default Re: Q7 4.2l, Question about black smoke during initial start

Thank you for your suggestion. That was one of the possibilities Audi has mentioned to me as well. I'll try, and in a few weeks time, I'll see if it will make a difference. It's just funny,.... my wife drives an Audi A4 2009 3.2l and she has no issue with the gasoline she puts in her car. I used PetroCan before but thought that with Shell, not having the Ethanol additive, the engine would benefit with better performance and fuel consumption from it. But maybe 94 octane with up to 5% ethanol are better then 91 octane and no ethanol. I'll switch back to PertroCan, and maybe it will prove that Audi is right with their explanation to my problem. I'll keep you posted.
Thank again for taking the time answering my question.
Fuselfarz is offline  
Reply With Quote
Old 04-07-2012, 11:57 AM
  #4  
Audi Forum - Posts like an A1
Thread Starter
 
Fuselfarz's Avatar
 
Join Date: May 2011
Location: Canada
Posts: 8
Fuselfarz is on a distinguished road
Default Re: Q7 4.2l, Question about black smoke during initial start

Originally Posted by Fuselfarz View Post
Thank you for your suggestion. That was one of the possibilities Audi has mentioned to me as well. I'll try, and in a few weeks time, I'll see if it will make a difference. It's just funny,.... my wife drives an Audi A4 2009 3.2l and she has no issue with the gasoline she puts in her car. I used PetroCan before but thought that with Shell, not having the Ethanol additive, the engine would benefit with better performance and fuel consumption from it. But maybe 94 octane with up to 5% ethanol are better then 91 octane and no ethanol. I'll switch back to PertroCan, and maybe it will prove that Audi is right with their explanation to my problem. I'll keep you posted.
Thank again for taking the time answering my question.

Almost a Year later,..... smoke is still present. What I did noticed is, that during the cooled winter month the smoke is more evident, then during the warmer climate in the summer month. Would that indicate that the temperature control sensor is maybe sending the wrong signals to the engine management unite? Still no idea or help from Audi dealer. The changing of gas companies was no help. Doesn't matter which company I'm using. Smoke will appear regardless.
Fuselfarz is offline  
Reply With Quote
Old 04-07-2012, 11:58 AM
  #5  
Audi Forum - Posts like an A1
Thread Starter
 
Fuselfarz's Avatar
 
Join Date: May 2011
Location: Canada
Posts: 8
Fuselfarz is on a distinguished road
Default Re: Q7 4.2l, Question about black smoke during initial start

see above

Last edited by Fuselfarz; 04-07-2012 at 12:01 PM. Reason: made a mistake
Fuselfarz is offline  
Reply With Quote
Old 05-03-2012, 05:59 PM
  #6  
Audi Forum - Posts like an A1
 
Join Date: May 2012
Location: Quebec
Posts: 10
Snowgoer is on a distinguished road
Default Re: Q7 4.2l, Question about black smoke during initial start

straight honest answer don't worry about the black smoke on start up its nothing bad or to wherry about all it means its that your running rich on start up its not bad for the engine. Alot of high performance or big engines make black smoke on start up.
Snowgoer is offline  
Reply With Quote
 
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
AdrianAudi
A4-B8 - (Typ 8K, 2008–present)
2
06-27-2015 09:58 AM
ryguy604
Q5 - Q7
20
01-17-2011 03:52 PM
everfresh
General Audi Discussion
4
08-08-2010 03:42 PM
JeffInTulsa
Audi Cars For Sale
1
12-09-2008 05:00 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: Q7 4.2l, Question about black smoke during initial start


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.