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  1. #1
    Established Member Two Rings NODO-GT's Avatar
    Join Date
    Jul 30 2010
    AZ Member #
    62058
    My Garage
    Audi A4 B7 2.0T Quattro 6MT
    Location
    Tbilisi

    Cold Start problems

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    Hello,

    as it got colder, I have some problems with starting a car in the morning.

    it has rough idle (Looks like misfire), after 2-3 minutes it has lot's of smoke and I think a little bit of petrol is coming out of the exhaust.

    I have looked through the web and so far found that it might be Injectors. Would you guys suggest anything specific to our engines?

    after 5 minutes everything is normal, I have this problem only in the mornings when car was standing whole night (-4 degree Celsius).

    I have new latest revision coil packs + 1 step colder spark plugs....
    2005.5 Audi A4 B7 2.0TFSI Quattro 6MT
    |Visuals: Lip Spoiler CF / Headlight Blackout + Clear Corner / LED Number Plate / Smoked LED Tail Lights / RS4 Grill / Night Braker Plus / S-line Door Blades / Gunmetal RS4 18" Wheels|
    |Performance: ECU Tune / Test Pipe / K&N Air Filter / Vast Perfromance Stage II Clutch / S-line Suspension|
    |Maitenance: BSH PCV FIX / Diverter Valve Revision D / Fuel Pump Cam Follower / Purge Valve N80 / Seafoam / Coil Packs Revision F / Spark Plugs NGK BKR7EIX|

  2. #2
    Veteran Member Four Rings schirm's Avatar
    Join Date
    Apr 23 2009
    AZ Member #
    41587
    My Garage
    1999 bmw z3coup M with 5,000 miles Mint
    Location
    Forked River nj

    the colder plugs might cause the issue.
    2004 A4 1.8t | Avant | 6MT | Stock | Atlas gray |

    2010 S4 | Ice Silver Metallic | Sport Diff | 6 speed | 19 5-Tri-Spoke Wheels | Audi Drive Select | B&O | Silver/Black Nappa Sport Seats | Navigation Pkg | Brushed Aluminum Trim | APR Stage 2+ | Hoen Xenonmatch Fogs | 034 Motor mounts | Roc Euro | black RS4 Grille |
    Past
    2007 A4 | Revo Sg 2+

    2005 Subaru Legacy GT 365WHP

  3. #3
    Veteran Member Four Rings LoKisSpYdR's Avatar
    Join Date
    Jun 26 2012
    AZ Member #
    95867
    My Garage
    Brilliant Red B7 A4 2.0T Titanium quattro Tip - 2015 Q7 PP
    Location
    Reading, PA Area

    There have been a number of these posts in the last month or so (since it got cold). There are many things that can cause erratic behavior in colder weather including, but not limited to:
    Battery
    Spark Plugs
    Coil Packs
    fuel filter
    Frozen Gunk in your Catch Can
    additives in grade of gas you use (when in doubt Shell 93 or local equivalent)

    Start poking around, maybe grab a set of copper OE replacement plugs and see if that helps. If you have a vagcom, or know someone who does, see what's going on.
    B6 A4 1.8T Dolphin Gray qM
    4L Q7 3.0T Glacier White PP

  4. #4
    Veteran Member Four Rings schirm's Avatar
    Join Date
    Apr 23 2009
    AZ Member #
    41587
    My Garage
    1999 bmw z3coup M with 5,000 miles Mint
    Location
    Forked River nj

    X2 What he said.

    Quote Originally Posted by LoKisSpYdR View Post
    There have been a number of these posts in the last month or so (since it got cold). There are many things that can cause erratic behavior in colder weather including, but not limited to:
    Battery
    Spark Plugs
    Coil Packs
    fuel filter
    Frozen Gunk in your Catch Can
    additives in grade of gas you use (when in doubt Shell 93 or local equivalent)

    Start poking around, maybe grab a set of copper OE replacement plugs and see if that helps. If you have a vagcom, or know someone who does, see what's going on.
    2004 A4 1.8t | Avant | 6MT | Stock | Atlas gray |

    2010 S4 | Ice Silver Metallic | Sport Diff | 6 speed | 19 5-Tri-Spoke Wheels | Audi Drive Select | B&O | Silver/Black Nappa Sport Seats | Navigation Pkg | Brushed Aluminum Trim | APR Stage 2+ | Hoen Xenonmatch Fogs | 034 Motor mounts | Roc Euro | black RS4 Grille |
    Past
    2007 A4 | Revo Sg 2+

    2005 Subaru Legacy GT 365WHP

  5. #5
    Established Member Two Rings NODO-GT's Avatar
    Join Date
    Jul 30 2010
    AZ Member #
    62058
    My Garage
    Audi A4 B7 2.0T Quattro 6MT
    Location
    Tbilisi

    Thanks for your replays. I'll start with chaining fuel, Coils should be no problem, as they where replaced lately with newest revision, Battery is good also...
    I'm left with Spark plugs, fuel filter, and gunk in catch can...
    I do have diagnostic cable, will to get some logs, will post them later.
    2005.5 Audi A4 B7 2.0TFSI Quattro 6MT
    |Visuals: Lip Spoiler CF / Headlight Blackout + Clear Corner / LED Number Plate / Smoked LED Tail Lights / RS4 Grill / Night Braker Plus / S-line Door Blades / Gunmetal RS4 18" Wheels|
    |Performance: ECU Tune / Test Pipe / K&N Air Filter / Vast Perfromance Stage II Clutch / S-line Suspension|
    |Maitenance: BSH PCV FIX / Diverter Valve Revision D / Fuel Pump Cam Follower / Purge Valve N80 / Seafoam / Coil Packs Revision F / Spark Plugs NGK BKR7EIX|

  6. #6
    Veteran Member Four Rings fordyoz's Avatar
    Join Date
    Apr 20 2011
    AZ Member #
    74329
    Location
    Philadelphia

    same issues for me. going to pick up a new battery after work and empty catch can.
    Borg Warner EFR6758 B7 A4

  7. #7
    Veteran Member Four Rings Schweini's Avatar
    Join Date
    Sep 12 2011
    AZ Member #
    81157
    My Garage
    2011 GTI mk6 DSG
    Location
    Hamilton Ontario

    yeah same issues here as well.

    I have 3 of the newest addition coilpacks (F), and for some reason I didn't change the the last one since I wasn't getting a misfire from that cylinder (D). At any rate, I went in the other day to the dealer to buy one, and they now charge $51 per coilpack!! The guy told me they were the new year prices. The other 3 I bought were $23 a pop from them.
    2008 A4 S-line 2.0T
    JHM Stage 2


  8. #8
    Veteran Member Four Rings fordyoz's Avatar
    Join Date
    Apr 20 2011
    AZ Member #
    74329
    Location
    Philadelphia

    damn hope they lubed you up before that one
    Borg Warner EFR6758 B7 A4

  9. #9
    Veteran Member Four Rings Schweini's Avatar
    Join Date
    Sep 12 2011
    AZ Member #
    81157
    My Garage
    2011 GTI mk6 DSG
    Location
    Hamilton Ontario

    no man, I'm still walking funny from it
    2008 A4 S-line 2.0T
    JHM Stage 2


  10. #10
    Established Member Two Rings NODO-GT's Avatar
    Join Date
    Jul 30 2010
    AZ Member #
    62058
    My Garage
    Audi A4 B7 2.0T Quattro 6MT
    Location
    Tbilisi

    Started up car today and everything was normal... strange
    2005.5 Audi A4 B7 2.0TFSI Quattro 6MT
    |Visuals: Lip Spoiler CF / Headlight Blackout + Clear Corner / LED Number Plate / Smoked LED Tail Lights / RS4 Grill / Night Braker Plus / S-line Door Blades / Gunmetal RS4 18" Wheels|
    |Performance: ECU Tune / Test Pipe / K&N Air Filter / Vast Perfromance Stage II Clutch / S-line Suspension|
    |Maitenance: BSH PCV FIX / Diverter Valve Revision D / Fuel Pump Cam Follower / Purge Valve N80 / Seafoam / Coil Packs Revision F / Spark Plugs NGK BKR7EIX|

  11. #11
    Veteran Member Four Rings fordyoz's Avatar
    Join Date
    Apr 20 2011
    AZ Member #
    74329
    Location
    Philadelphia

    me too, but i cleared my catch can and parked in the garage overnight. so it was about 10 degrees warmer than normal.
    Borg Warner EFR6758 B7 A4

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