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  1. #1
    Veteran Member Three Rings ChescoS6's Avatar
    Join Date
    Jan 13 2007
    AZ Member #
    14848
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    2012 Golf TDI 2003 Ducati ST4s ABS 2007 Ducati Monster S2R
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    Blue smoke under hard acceleration

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    Driving in to work today I was doing about 75mph and floored it to pass and make a lane change. I looked up into my rearview mirror as I was doing it and noticed a little cloud of blue smoke. Obviously blue smoke would mean I am burning oil right? I checked the oil once I got to work and it may be slightly low, it's 2/3 up the hash marked area. First time I ever noticed this and the car runs great. Only 67k miles on the motor

    I had a G60 Corrado that did the same thing to me about 8 years ago except it was a huge amount of blue smoke and turned out the rings were shot and a piston disentegrated

    Any suggestions or do you think I have anything to worry about? I'm kinda bummed that there might be a problem. I'm due for a timing belt job soon so if there's something I can replace while that's done to save labor I'm open to input.

    It's a 2002 S6 (4.2)

    THANKS!
    Looking for Misc 2001 B5 A4 Avant parts. See my add in classifieds!

  2. #2
    Veteran Member Four Rings
    Join Date
    Apr 18 2007
    AZ Member #
    17386
    Location
    ny
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    Re: Blue smoke under hard acceleration

    I was ready to tell you that your turbos were going lol It could be a few things, head gasket, valve seat, piston rings etc. Keep an eye out to see if it does it again.
    6 Speed--EPL--034--SPEC--ER--AquaMist--Forge--RS4--RS6--K04 --RNS-E--DTS--PSS9's
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  3. #3
    Veteran Member Three Rings 04A6SLine's Avatar
    Join Date
    Oct 16 2007
    AZ Member #
    21861
    Location
    Brooklyn NY

    Re: Blue smoke under hard acceleration

    from my Lexus Es300 days,,

    Blue means Piston rings..
    white means Blown Head GAsket
    Black means bad gas..



    correct me if i'm wrong..

  4. #4
    Active Member One Ring
    Join Date
    Feb 01 2009
    AZ Member #
    38159
    Location
    Durham, NC

    Re: Blue smoke under hard acceleration

    Possibly a PCV problem that builds up pressure in the crankcase, blowing oil past the valve stem seals and rings. You could slip one of the breather hoses off a valve cover and see if the smoke is still there. With your miles I would think it is a trivial problem, not worn rings or anything major.

  5. #5
    Veteran Member Three Rings ChescoS6's Avatar
    Join Date
    Jan 13 2007
    AZ Member #
    14848
    My Garage
    2012 Golf TDI 2003 Ducati ST4s ABS 2007 Ducati Monster S2R
    Location
    PA

    Re: Blue smoke under hard acceleration

    That's good to hear. I'll look into that tomorrow. Hopefully that's the issue.
    Looking for Misc 2001 B5 A4 Avant parts. See my add in classifieds!

  6. #6
    Veteran Member Three Rings Coors's Avatar
    Join Date
    Aug 21 2008
    AZ Member #
    32217
    My Garage
    04 A4 USP 6MT
    Location
    Philly

    Re: Blue smoke under hard acceleration

    Get the system pressure tested. Focus on the head gaskets and the oil breather system.
    I highly doubt you slipped a piston ring. The smoke would be there at idle. It would run like sh&t.

    Any lose in power? How's your coolant levels?
    The greatest trick the Devil ever pulled was convincing the world he didn't exist, then poof he is gone.
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  7. #7
    Established Member Two Rings
    Join Date
    Feb 02 2008
    AZ Member #
    24796
    My Garage
    03 allroad 6MT, Turbo M3
    Location
    Downers Grove, IL

    Re: Blue smoke under hard acceleration

    oil getting in somehow.

    do a leak down test, that will rule out rings and valves

    clean/check PCV system. check your intake manifold see if there is oil in it.
    ///Andres
    03' allroad 6mt -black - 402'd, K&N, RS4 clutch, APR exhaust, RNS-E, H-Sports, HP-2, SS brake lines, 19" RS6, 35% tint
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  8. #8
    Veteran Member Three Rings ChescoS6's Avatar
    Join Date
    Jan 13 2007
    AZ Member #
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    My Garage
    2012 Golf TDI 2003 Ducati ST4s ABS 2007 Ducati Monster S2R
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    PA

    Re: Blue smoke under hard acceleration

    I removed the PCV valve located at the back of the IM last night. I took it apart and cleaned it thoroughly. It was pretty gummed up inside but the spring looked like it could move freely. I doubt it was causing a problem but it's ruled out for now. I had minimal oil, a thin film, inside the breather hoses coming off the valve on the bottom and side. It didn't look like anything to worry about either. I did a few hard runs on a local highway at WOT and didn't see anything. Maybe I was imagining things.

    I had a Pontiac G8 GT behind me on the highway and thought it was a perfect time for a WOT test run. No smoking but I did get reeled in rather quickly by the G8

    Anyway, thanks for everyone's input and suggestions!
    Looking for Misc 2001 B5 A4 Avant parts. See my add in classifieds!

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