A question for the car guys (or girls)

Discussion in 'Off Topic [BG]' started by Jim Nazium, Apr 15, 2012.

  1. Car people. Didn't mean to be sexist.

    When I see liquid dripping out of the exhaust pipe, is that water or unburned fuel? What causes that?
  2. Unrepresented

    Unrepresented Something Borderline Offensive

    Jul 1, 2006
    San Diego, CA
    Probably water from condensation in the exhaust. I assume this is just when the vehicle's relatively cold, right?
  3. PSPookie


    Aug 13, 2006
    Albuquerque, NM
    It is the soul of a thousand unborn babies reproaching you for your use of fossil fuels.

    Or condensation.
  4. Bassist Jay

    Bassist Jay

    Dec 28, 2009
    Sterling, CO.
    Endorsed by K.B. Guitars, Nordstrand Audio Pickups, Von York Strings and Gallien-Krueger Amps.
    In most cases it is water or condensation from built up moisture having hot exhaust travel over.
  5. blastoff99

    blastoff99 Moderators Local A440 Staff Member Gold Supporting Member Supporting Member

    Dec 17, 2011
    Under the flight path
    Fuel would be highly unlikely to make it that far, and besides, your cat(alytic converter) would be most unhappy with a diet of liquid unleaded.

    It's condensation.
  6. jmattbassplaya

    jmattbassplaya Supporting Member

    Jan 13, 2008
  7. NateS


    Sep 22, 2009
    Richmond, VA, USA
    Haha TB is the second search result.

    Yeaaa...its water. Next question, please? :)
  8. mellowinman

    mellowinman Free Man

    Oct 19, 2011
    I must say, I didn't expect that.

  9. Am I doing the internet wrong? I'm so sorry.
  10. MJ5150

    MJ5150 Moderator Staff Member Gold Supporting Member

    Apr 12, 2001
    Olympia, WA
    I disagree with the other posters. It's water coming out your exhaust pipe.

  11. michael_atw


    Feb 28, 2009
    Jamestown, NY
    I don't think it's water guys. It might be something more sinister....
  12. Bassamatic

    Bassamatic keepin' the beat since the 60's

    Water vapor is a by product of the combustion. It normally comes out as steam and is invisible, except in weather when you can see it. When you shut the engine off, the steam condenses as it cools, and when you start it up again the water is pushed out by the exhaust. Once the engine gets hot - it becomes invisible steam again. This is the main reason exhaust systems rust out.
  13. 1958Bassman


    Oct 20, 2007
    It's a little-known substance, somewhat hazardous by nature, called Hydrogen Oxide, among others.
  14. 1958Bassman


    Oct 20, 2007
    Not only the presence of it, but short trips never let the exhaust system get hot enough for all of it to evaporate.
  15. For short trips it is probably H2O condensate....if it is still apparent on a longer trip and you're using water, you have a bigger problem......headgasket or?
  16. malthumb


    Mar 25, 2001
    The Motor City
    TOTALLY IRRELEVENT POST HERE......Mike, wrt your avatar....My son started working on Chameleon yesterday

    RELEVENT.....Yup. Water.

    Carry on....