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  1. #1
    Veteran Member Four Rings
    Join Date
    Feb 20 2010
    AZ Member #
    54926
    My Garage
    2009 Dodge Journey, 1998 Passat AEB, 1999 Passat AEB, 2000 A4 ATW, 2002 A6 3.0/2.7T tiptronic KLR250
    Location
    Brighton, MI

    2.0T - still misfires when colder

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    Car is now (again) showing misfires on all 4 cylinders.
    Started to occur when morning temps dropped below 30 over the last 2 days.

    Recently done;
    - carbon build intake valves (VERY bad build up; misfires, barely starting)
    - PCV valve
    - new coils
    - new plugs
    - rear main seal

    Still has oil leak at timing cover.

    Unrelated: DSG service done.

    When car was brought to me today, it was warm, engine running and sounding perfect, no misfires. Yesterday, (not so) cold start, misfiring, CEL on.

    What else can I check and troubleshoot to determine the cause of the misfires?

    110k miles on the car.
    01 Allroad Tiptronic, TCU tune, mild stg 3 (350 HP) tune (stock injectors) KraftwerkTurbo TM1. Lower, Wider. Custom tip vent pod with Podi
    02 Allroad 6 spd, Kraftwerk Turbo TM6, 750cc, 3" MAF, piggy, FMIC, CM stg 5 (hate). 30 psi at 3600 rpm. Needs stronger rods (coming).
    05 Golf TDI
    Looking for 2001 A4 1.8T quattro manual with blown motor
    www.regulatorfix.com
    www.kraftwerkturbo.com

  2. #2
    Established Member Two Rings mecg's Avatar
    Join Date
    Apr 12 2016
    AZ Member #
    371705
    Location
    Readfield, Maine, USA

    What are you getting for codes?
    2013 Audi A4 quattro Prem, ZF8, APR Stage 2+ 93/E85 Tune + Cast Downpipe/HFC, R8 coils, aFe Dry Pro, Eurocode Intercooler pipe, Turbo Muffler Delete, Fitch Fuel Catalyst, RS Grille, Tinted windows, Audi logo puddle lights, Interior LEDs, VCDS tweaks, 18x8 Andros R9 Wheels w/ Michelin Pilot Super Sports
    2008 Saab 9-5 2.3T BCB, K&N, Fitch Fuel Catalyst, Interior LEDs

  3. #3
    Veteran Member Four Rings
    Join Date
    Feb 20 2010
    AZ Member #
    54926
    My Garage
    2009 Dodge Journey, 1998 Passat AEB, 1999 Passat AEB, 2000 A4 ATW, 2002 A6 3.0/2.7T tiptronic KLR250
    Location
    Brighton, MI

    Quote Originally Posted by mecg View Post
    What are you getting for codes?
    Misfire random:

    000768 - Random/Multiple Cylinder Misfire Detected
    P0300 - 000 - - Intermittent
    Freeze Frame:
    Fault Status: 00100000
    Fault Priority: 0
    Fault Frequency: 7
    Reset counter: 255
    Mileage: 183529 km
    Time Indication: 0
    Date: 2019.14.19
    Time: 11:06:09

    Freeze Frame:
    RPM: 906 /min
    Load: 32.5 %
    Speed: 0.0 km/h
    Temperature: 6.0C
    Temperature: 0.0C
    Absolute Pres.: 980.0 mbar

    000769 - Cylinder 1
    P0301 - 000 - Misfire Detected - Intermittent
    Freeze Frame:
    Fault Status: 00100000
    Fault Priority: 0
    Fault Frequency: 7
    Reset counter: 255
    Mileage: 183529 km
    Time Indication: 0
    Date: 2019.14.19
    Time: 11:06:09

    000771 - Cylinder 3
    P0303 - 000 - Misfire Detected - Intermittent
    Freeze Frame:
    Fault Status: 00100000
    Fault Priority: 0
    Fault Frequency: 7
    Reset counter: 255
    Mileage: 183529 km
    Time Indication: 0
    Date: 2019.14.19
    Time: 11:06:20

    Freeze Frame:
    RPM: 900 /min
    Load: 32.5 %
    Speed: 0.0 km/h
    Temperature: 8.0C
    Temperature: 0.0C
    Absolute Pres.: 980.0 mbar

    000772 - Cylinder 4
    P0304 - 000 - Misfire Detected - Intermittent
    Freeze Frame:
    Fault Status: 00100000
    Fault Priority: 0
    Fault Frequency: 7
    Reset counter: 255
    Mileage: 183529 km
    Time Indication: 0
    Date: 2019.14.19
    Time: 11:06:20

    000770 - Cylinder 2
    P0302 - 000 - Misfire Detected - Intermittent
    Freeze Frame:
    Fault Status: 00100000
    Fault Priority: 0
    Fault Frequency: 7
    Reset counter: 255
    Mileage: 183529 km
    Time Indication: 0
    Date: 2019.14.19
    Time: 11:06:20

    Freeze Frame:
    RPM: 900 /min
    Load: 32.5 %
    Speed: 0.0 km/h
    Temperature: 8.0C
    Temperature: 0.0C
    Absolute Pres.: 980.0 mbar
    01 Allroad Tiptronic, TCU tune, mild stg 3 (350 HP) tune (stock injectors) KraftwerkTurbo TM1. Lower, Wider. Custom tip vent pod with Podi
    02 Allroad 6 spd, Kraftwerk Turbo TM6, 750cc, 3" MAF, piggy, FMIC, CM stg 5 (hate). 30 psi at 3600 rpm. Needs stronger rods (coming).
    05 Golf TDI
    Looking for 2001 A4 1.8T quattro manual with blown motor
    www.regulatorfix.com
    www.kraftwerkturbo.com

  4. #4
    Active Member One Ring kehubbard's Avatar
    Join Date
    Feb 05 2017
    AZ Member #
    392490
    My Garage
    2012 Audi A4 2011 Honda Pilot
    Location
    Sycamore, IL USA

    Considering what has already been done it seems plausible that you should be looking for a fueling issue. Maybe the injectors are also nasty with carbon and can't flow enough when the engine is cold and in the enrichment mode.

  5. #5
    Registered Member One Ring
    Join Date
    Oct 22 2017
    AZ Member #
    408753
    Location
    Fort Meade

    Just checking with u guys if u found the issue? I am getting the same exact codes. I have a 2009 A4 2.0t.


    Sent from my iPhone using Audizine

  6. #6
    Veteran Member Four Rings
    Join Date
    Feb 20 2010
    AZ Member #
    54926
    My Garage
    2009 Dodge Journey, 1998 Passat AEB, 1999 Passat AEB, 2000 A4 ATW, 2002 A6 3.0/2.7T tiptronic KLR250
    Location
    Brighton, MI

    Update: through further searches, I found finally became aware of the carbon build up issue on the direct injected cars, specifically the Audi VW 4 cylinder 2.0T.
    Removed intake, and found intake valves CAKED with carbon build up.
    Cleaned.
    Running fine.

    Since then, have done several intake cleanings on 2.0T in my network who should symptoms, and as preventative maintenance.
    01 Allroad Tiptronic, TCU tune, mild stg 3 (350 HP) tune (stock injectors) KraftwerkTurbo TM1. Lower, Wider. Custom tip vent pod with Podi
    02 Allroad 6 spd, Kraftwerk Turbo TM6, 750cc, 3" MAF, piggy, FMIC, CM stg 5 (hate). 30 psi at 3600 rpm. Needs stronger rods (coming).
    05 Golf TDI
    Looking for 2001 A4 1.8T quattro manual with blown motor
    www.regulatorfix.com
    www.kraftwerkturbo.com

  7. #7
    Registered Member One Ring
    Join Date
    Oct 22 2017
    AZ Member #
    408753
    Location
    Fort Meade

    Good info. I know my rear main is leaking really bad. About how much did that run u?


    Sent from my iPhone using Audizine

  8. #8
    Veteran Member Four Rings
    Join Date
    Feb 20 2010
    AZ Member #
    54926
    My Garage
    2009 Dodge Journey, 1998 Passat AEB, 1999 Passat AEB, 2000 A4 ATW, 2002 A6 3.0/2.7T tiptronic KLR250
    Location
    Brighton, MI

    Quote Originally Posted by chiefl View Post
    Good info. I know my rear main is leaking really bad. About how much did that run u?
    THAT (rear main seal leak) was another cause for misfire (2010 A5 2.0T). What mainly opened my eyes to that possibility was a leak test with a smoker (couldn't find anything from the top, but when getting underneath the car/engine, I found lots of smoke coming from transmission bell housing area); never thought of a rear main seal leak as a vacuum leak. Change rear main (shop around $1,500) fixed those misfires.

    Intake valve cleaning: what I read, around $400-$600 at shops.
    01 Allroad Tiptronic, TCU tune, mild stg 3 (350 HP) tune (stock injectors) KraftwerkTurbo TM1. Lower, Wider. Custom tip vent pod with Podi
    02 Allroad 6 spd, Kraftwerk Turbo TM6, 750cc, 3" MAF, piggy, FMIC, CM stg 5 (hate). 30 psi at 3600 rpm. Needs stronger rods (coming).
    05 Golf TDI
    Looking for 2001 A4 1.8T quattro manual with blown motor
    www.regulatorfix.com
    www.kraftwerkturbo.com

  9. #9
    Registered Member One Ring
    Join Date
    Oct 22 2017
    AZ Member #
    408753
    Location
    Fort Meade

    Interesting. Thx


    Sent from my iPhone using Audizine

  10. #10
    Active Member Two Rings Nczcar01's Avatar
    Join Date
    Jul 30 2017
    AZ Member #
    403986
    Location
    Conyers, GA

    I have heard some stories about upgraded PCV due to older versions causing rear main seal to blow....resulting in misfires.
    2006 Audi A6 Quattro 3.2L
    2010 Audi A4 Quattro 2.0L 6 sp mt
    2015 Ford F-150 super crew 5.0L
    2017 Toyota Highlander
    1994 Honda ST1100
    1982 Honda GL500

  11. #11
    Registered Member One Ring
    Join Date
    Oct 22 2017
    AZ Member #
    408753
    Location
    Fort Meade

    Ok interesting. I was planning on changing the pvc just as a precaution for future problems. Taking the car to a shop tomorrow to get the rear main done.


    Sent from my iPhone using Audizine

  12. #12
    Registered Member One Ring
    Join Date
    Oct 22 2017
    AZ Member #
    408753
    Location
    Fort Meade

    Just an update
    I had the RMS done and changed the PVC to include an intake valve cleaning. The car how ever continues to have a misfire in cyl 2&4. The shop is keeping it over the weekend to do a smoke test. Hopefully its something minor. Im done throwing money at this car


    Sent from my iPhone using Audizine

  13. #13
    Registered Member One Ring
    Join Date
    Oct 22 2017
    AZ Member #
    408753
    Location
    Fort Meade

    So for the RMS-$1600
    Valve cleaning-$500
    Smoke test-$200


    Sent from my iPhone using Audizine

  14. #14
    Veteran Member Four Rings
    Join Date
    Feb 20 2010
    AZ Member #
    54926
    My Garage
    2009 Dodge Journey, 1998 Passat AEB, 1999 Passat AEB, 2000 A4 ATW, 2002 A6 3.0/2.7T tiptronic KLR250
    Location
    Brighton, MI

    Just to be sure, you already did check the obvious: coils and plugs?
    If you have vagcom, watch block 015 and 016 (misfire counter per cylinder).
    If predominantly 2 and 4, switch coil 2 to 1, 1 to 2. Repeat and check misfire count.
    Then plugs.

    With cleaned valves, rear main seal and no leaks (smoke test), PCV done: not sure where else to look really.

    I assume misfires when when cold and idle? And not so much when warmed up, and driving?
    01 Allroad Tiptronic, TCU tune, mild stg 3 (350 HP) tune (stock injectors) KraftwerkTurbo TM1. Lower, Wider. Custom tip vent pod with Podi
    02 Allroad 6 spd, Kraftwerk Turbo TM6, 750cc, 3" MAF, piggy, FMIC, CM stg 5 (hate). 30 psi at 3600 rpm. Needs stronger rods (coming).
    05 Golf TDI
    Looking for 2001 A4 1.8T quattro manual with blown motor
    www.regulatorfix.com
    www.kraftwerkturbo.com

  15. #15
    Registered Member One Ring
    Join Date
    Oct 22 2017
    AZ Member #
    408753
    Location
    Fort Meade

    Coils and plugs r brand new from ECStuning. Lets see what smoke test results r. They already swapped coils and that didnt change. Last things i can think of is the manifold or the injectors.


    Sent from my iPhone using Audizine

  16. #16
    Registered Member One Ring
    Join Date
    Oct 26 2017
    AZ Member #
    408940
    Location
    Toronto, Ontario

    Sounds like injectors.

    Sent from my SM-G935W8 using Tapatalk

  17. #17
    Registered Member One Ring
    Join Date
    Oct 22 2017
    AZ Member #
    408753
    Location
    Fort Meade

    Shop did a compression test and got 90 psi from cyl 2 & 4.


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  18. #18
    Active Member Two Rings Nczcar01's Avatar
    Join Date
    Jul 30 2017
    AZ Member #
    403986
    Location
    Conyers, GA

    Quote Originally Posted by chiefl View Post
    Shop did a compression test and got 90 psi from cyl 2 & 4.


    Sent from my iPhone using Audizine
    Check this thread out. Sounds like some similarities.
    http://www.audizine.com/forum/showth...mpression+test
    2006 Audi A6 Quattro 3.2L
    2010 Audi A4 Quattro 2.0L 6 sp mt
    2015 Ford F-150 super crew 5.0L
    2017 Toyota Highlander
    1994 Honda ST1100
    1982 Honda GL500

  19. #19
    Registered Member One Ring
    Join Date
    Oct 22 2017
    AZ Member #
    408753
    Location
    Fort Meade

    It does. Might be worth a look in the valve cover.


    Sent from my iPhone using Audizine

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