Notices
 

  

User Tag List

Thread: Running lean

Page 2 of 4 FirstFirst 1234 LastLast
Results 11 to 20 of 34
  1. Re: Running lean 
    #11
    Join Date
    Jan 2007
    Location
    Nottingham, England
    Posts
    35,758
    Post Thanks / Like
    Blog Entries
    2
    Mentioned
    33 Post(s)
    Tagged
    1 Thread(s)
    Quoted
    733 Post(s)
    As I said, for all four to fail equally would be unheard of...
    "I disapprove of what you say, but I will defend to the death your right to say it"

    Evelyn Beatrice Hall (1868-1956)
     
    0 0 0
     

  2. Re: Running lean 
    #12
    Join Date
    Dec 2017
    Location
    Lochgelly
    Posts
    25
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
    Quote Originally Posted by Crasher View Post
    As I said, for all four to fail equally would be unheard of...
    I understand that, but what if it's only one that's failed, wouldn't it be the same symptoms was what I meant?

    Sent from my SM-G965F using Tapatalk
     
    0 0 0
     

  3. Re: Running lean 
    #13
    Join Date
    Jan 2007
    Location
    Nottingham, England
    Posts
    35,758
    Post Thanks / Like
    Blog Entries
    2
    Mentioned
    33 Post(s)
    Tagged
    1 Thread(s)
    Quoted
    733 Post(s)
    If one has failed to that degree I would expect the cylinder to underperform and the ECU should pick this up as the firing speed would change and would then the ECDU would be able to identify the suspect cylinder and shut off the injector concerned which would then give you a proper misfire. If it is not obviously down on one cylinder I think code is indicating it is an overall lean running condition from all four cylinders.
    "I disapprove of what you say, but I will defend to the death your right to say it"

    Evelyn Beatrice Hall (1868-1956)
     
    0 0 0
     

  4. Re: Running lean 
    #14
    Join Date
    Jan 2007
    Location
    Nottingham, England
    Posts
    35,758
    Post Thanks / Like
    Blog Entries
    2
    Mentioned
    33 Post(s)
    Tagged
    1 Thread(s)
    Quoted
    733 Post(s)
    Which year and engine code is it?
    "I disapprove of what you say, but I will defend to the death your right to say it"

    Evelyn Beatrice Hall (1868-1956)
     
    0 0 0
     

  5. Re: Running lean 
    #15
    Join Date
    Dec 2017
    Location
    Lochgelly
    Posts
    25
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
    Quote Originally Posted by Crasher View Post
    Which year and engine code is it?
    Ok that makes sense, so I can pretty much rule that out as being my issue just now, it's a 2007 s3. BHZ engine code. I have tested the Pcv delete yesterday, as i closed off all its access to any metered air and there is definately no unmetered air making it's way from my Maf to my turbo inlet.

    Sent from my SM-G965F using Tapatalk
     
    0 0 0
     

  6. Re: Running lean 
    #16
    Join Date
    Jan 2007
    Location
    Nottingham, England
    Posts
    35,758
    Post Thanks / Like
    Blog Entries
    2
    Mentioned
    33 Post(s)
    Tagged
    1 Thread(s)
    Quoted
    733 Post(s)
    I will have a think.
    "I disapprove of what you say, but I will defend to the death your right to say it"

    Evelyn Beatrice Hall (1868-1956)
     
    0 0 0
     

  7. Re: Running lean 
    #17
    Join Date
    Dec 2017
    Location
    Lochgelly
    Posts
    25
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
    Quote Originally Posted by Crasher View Post
    I will have a think.
    Thankyou. I'm at a dead end.

    Sent from my SM-G965F using Tapatalk
     
    0 0 0
     

  8. Re: Running lean 
    #18
    Join Date
    Jan 2007
    Location
    Nottingham, England
    Posts
    35,758
    Post Thanks / Like
    Blog Entries
    2
    Mentioned
    33 Post(s)
    Tagged
    1 Thread(s)
    Quoted
    733 Post(s)
    So you pressure tested the system at 0.5 Bar? I can't quite wrap my head around the concept of introducing an air leak stopping a lean running condition...
    "I disapprove of what you say, but I will defend to the death your right to say it"

    Evelyn Beatrice Hall (1868-1956)
     
    0 0 0
     

  9. Re: Running lean 
    #19
    Join Date
    Dec 2017
    Location
    Lochgelly
    Posts
    25
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)
    Quote Originally Posted by Crasher View Post
    So you pressure tested the system at 0.5 Bar? I can't quite wrap my head around the concept of introducing an air leak stopping a lean running condition...
    Yes. The only sense i can make of it is my fuel system can't keep up with all the air. So get rid of some of the air and my ltft comes right now to 3 I think it was, and it runs spot on.

    Sent from my SM-G965F using Tapatalk
     
    0 0 0
     

  10. Re: Running lean 
    #20
    Join Date
    Jan 2007
    Location
    Nottingham, England
    Posts
    35,758
    Post Thanks / Like
    Blog Entries
    2
    Mentioned
    33 Post(s)
    Tagged
    1 Thread(s)
    Quoted
    733 Post(s)
    That was running through my mind as well but I dismissed is based in it was OK before, I wonder if the fuel pressure is low? Not low enough to trigger a code but low enough to not keep up with the mapping?
    "I disapprove of what you say, but I will defend to the death your right to say it"

    Evelyn Beatrice Hall (1868-1956)
     
    0 0 0
     

Page 2 of 4 FirstFirst 1234 LastLast

Similar Threads

  1. Running lean tryed everything
    By troyritsema in forum 1.8T - Engine
    Replies: 3
    Last Post: 07-01-2018, 07:54 PM
  2. P0171 system running lean. Help please?
    By tobyg123123 in forum Audi A6 - C6 Forum - 2005 - 2010
    Replies: 1
    Last Post: 23-02-2017, 07:46 PM
  3. Audi S6 running lean
    By alinomie in forum Audi A6 - C5 Forum - 1998 - 2004
    Replies: 7
    Last Post: 22-09-2010, 04:59 PM
  4. Please Help Golf 1.6 SE 8 Valve Running lean
    By obx102 in forum Golf MK4 - 1999 - 2004
    Replies: 10
    Last Post: 12-12-2008, 03:15 PM
  5. Please Help MK3 ABF Running too Lean
    By Golf-Fiend in forum Golf MK3 - 1993 - 1999
    Replies: 0
    Last Post: 09-05-2008, 05:50 PM
Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  




  


Disclaimer: VW Audi Forum is an "independant enthusiast website", administered in line with guidelines supplied by VAG in the UK, and is in no way related to any of the Worldwide Volkswagen,Audi,Seat,Skoda,Bentley,Bugatti,Porsche or Lamborghini group of Companies. For official up to date information on any of there vehicles, please visit the official websites. Any comments made throughout this website, are the views of the respective poster, and in no way represent the views of the VW Audi Forum Administration, or the worldwide Volkswagen & Audi Group of companies.


VW Audi Forum do not vet and are not responsible for any information which is posted in this forum. All content is viewed and used by you at your own risk and we do not warrant the accuracy or reliability of any of the information.


Copyright: Certain "words", "phrases" and "Images" used on this website by the Administration are "Copyright" of Volkswagen GB, Volkswagen AG (Germany), Audi GB, Audi AG (Germany), Volkswagen Motorsport GB, Volkswagen Motorsport AG (Germany), Audi Motorsport AG (Germany), Volkswagen Racing GB, Bentley, Bugatti, Porsche and Lamborghini. No image can be replicated by anyone WITHOUT the relevant Companies written permission.


All trademarks and copyrights remain property of their respective owners.

No part of the VW Audi Forum website or forum may be reproduced without written permission from the site administration


PLEASE NOTE - PERSONAL ABUSE, ABUSE AGAINST THIS OR ANY OTHER WEBSITE OR ANY COMPANY WILL NOT BE TOLERATED. OFFENDERS WILL BE MODERATED OR EVEN BANNED.


This website and forum are best viewed at a minimum resolution of 1024 by 768.



  



- VW AUDI Forum - The #1 Volkswagen (VW) Group Forum - Volkswagen (VW) - Audi - Seat - Skoda - Bentley - Bugatti - Lamborghini - Porsche - VW Audi Forum -


- www.vwaudiforum.co.uk - www.vwaudiforum.co.uk -