1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Exhaust water...

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by ShivaYash, Nov 4, 2012.

  1. ShivaYash

    ShivaYash Senior Member

    Messages:
    519
    Likes Received:
    2
    Joined:
    Apr 29, 2012
    Location:
    London
    Your Mercedes:
    W124 1994 E200 estate (M111 engine)
    A strange question/ comment.

    Having driven 25 miles this evening, upon my return home, I noted that 'water vapour' was coming out of the exhaust. Surely this isn't right? Usually I only see this in cold weather when the car is cold.

    I drive a S124 E200 1994, M111 engine. It has 119k miles on the clock.

    Thanks.
     
  2. television

    television Always remembered RIP

    Messages:
    164,074
    Likes Received:
    274
    Joined:
    Mar 14, 2005
    Location:
    Daventry
    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    Is it loosing water
     
  3. OP
    ShivaYash

    ShivaYash Senior Member

    Messages:
    519
    Likes Received:
    2
    Joined:
    Apr 29, 2012
    Location:
    London
    Your Mercedes:
    W124 1994 E200 estate (M111 engine)
    I don't think so. I replaced the thermostat last week and its all running nicely. Topped up the coolant lost during the replacement and checked for airlock before putting the cap back on the water tank. Will check water level again in the morning.

    What do you think it may be?
     
  4. richardN2O

    richardN2O Senior Member

    Messages:
    629
    Likes Received:
    16
    Joined:
    Feb 14, 2012
    Location:
    Guildford, Surrey
    Your Mercedes:
    CL55 AMG Kompressor
    I think its ****** cold and my exhausts are doing the same as is every other car I've seen today
     
  5. cleverdicky

    cleverdicky Senior Member

    Messages:
    2,385
    Likes Received:
    2
    Joined:
    Feb 25, 2009
    Your Mercedes:
    MB
    Normal. Air warm or cold holds huge amounts of water.
    Although cold air actually holds less.
    You only notice it at the exhaust as it doesn't immediately re evaporate in cold weather as it would in the summer.
    If you had an engine problem you would notice severe poor running, white foamy oil, and loss of coolant.
     
  6. wireman

    wireman Senior Member

    Messages:
    2,632
    Likes Received:
    3
    Joined:
    Sep 20, 2005
    Location:
    lancashire
    Your Mercedes:
    nice 201 2.5D 1993 & very nice 129 SL500 1994
    You are burning Hydro-Carbon fuel, some of the combustion products are oxidised carbon and the rest are oxidised hydrogen, i.e. water, if the air temp is sufficiently low this will condense on exit from the exhaust system. There are also nitrogen and sulphur components which make the water slightly acidic.
    Quite normal.
     
    Last edited: Nov 5, 2012

Share This Page