06 A4 Quattro 2.0T misfires - AudiWorld Forums

Go Back  AudiWorld Forums > Audi Models > Audi A4 > A4 (B7 Platform) Discussion
Reload this Page > 06 A4 Quattro 2.0T misfires
Notices
A4 (B7 Platform) Discussion Discussion forum for the B7 Audi A4 produced from 2005-2008.5
Sponsored by:
Sponsored by:

06 A4 Quattro 2.0T misfires

Reply

 
 
Old 08-12-2017, 04:34 PM
  #1
AudiWorld Newcomer
Thread Starter
 
Farmer125's Avatar
 
Join Date: Aug 2017
Location: Atlanta, GA
Posts: 2
Default 06 A4 Quattro 2.0T misfires

I just purchased an 06 A4 Quattro 2.0 TFSI with 103K miles. Started getting a couple misfires under load. I changed out the plugs since it was a misfire on cylinder 3 from the CEL code. Problem continued, so I changed the coils as well, at that time I also changed out the cam follower as I know that is a known issue. Car is still showing the same issues. I have now replaced the coils, plugs, and cam follower. Any advice on what I cam try next would be greatly appreciated!
Farmer125 is offline  
Reply With Quote
Old 08-12-2017, 06:27 PM
  #2
Audiworld Junior Member
 
vce1232000's Avatar
 
Join Date: May 2017
Location: NJ
Posts: 48
Default

vcds scan it. get code and then post. Also do a compression test. possible needs valves carbon cleaned
vce1232000 is offline  
Reply With Quote
Old 08-12-2017, 06:36 PM
  #3
AudiWorld Newcomer
Thread Starter
 
Farmer125's Avatar
 
Join Date: Aug 2017
Location: Atlanta, GA
Posts: 2
Default

The last code I pulled was a P0303. I will pull the recent code tomorrow morning. Would the valves have heavy carbon deposits cause misfires? Because the only other things I could think of would be clogged injector(s), worn intake cam, or HPFP needs to be replaced due to previous cam follower issues before I acquired the car.
Farmer125 is offline  
Reply With Quote
Old 08-12-2017, 08:26 PM
  #4
Audiworld Junior Member
 
vce1232000's Avatar
 
Join Date: May 2017
Location: NJ
Posts: 48
Default

P0303 is a generic code. Use a vcds(vag-com) for more accuracy. Also you mite need to performance log to see the data in whats the problem.
Yes. heavy carbon deposits on the valves can cause a misfire.
vce1232000 is offline  
Reply With Quote
Old 11-11-2017, 11:14 PM
  #5
AudiWorld Newcomer
 
Join Date: Nov 2017
Posts: 3
Default

Hi Farmer125, any luck finding the problem of the misfiring. I had the same issue with misfiring on my 2006 A4 2.0T with the same MIL code that you had. At first, a 3 months ago I changed #3 coils but it did not fix the problem completely so checked all spark plugs and there were good, the last guy who owned this car had miss matched the coils and when I went to the dealership 2 days ago to change the rest of the coils and buy 3 more. I was told that Audi had came up with a new coil part that superseded the last one, and was told thats you can't miss match them, that would lead to misfiring agin. So I bough all 4 coils. Now there is no codes.
BUT, when I punch the car at a low RPM I can hear a random pops or I would say a small expulsion and it sound like coming form the passenger said where the turbo is located. Can anyone shad some light on to why this is happing. when I gun it at 3k RPM it will not pops or fires.
Nasserk is offline  
Reply With Quote
 
 
 


Thread Tools
Search this Thread
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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -8. The time now is 11:56 PM.


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.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: