Coolant loss

Discussion in 'Tech/Mech General' started by Figaro, Jun 26, 2016.

  1. Figaro

    Figaro Funster

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    Topped up coolant a few weeks ago to the Max mark, looked today and level is below Min mark !
    No leaks onto drive (or anywhere else apparent) and no milky residue on filler cap.
    So where can it have gone ?
    Done about 1,500 miles since topping up.
    It`s a 2003 2.8 JTD Ducato 55k and seems to be running sweetly.
    TIA
     
  2. Allanm

    Allanm Funster

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    Maybe just a loose pipe clip allowing coolant to weep out under pressure. It usually evaporates away without leaving much of a trace, but a good look ( with a torch) might show up some staining.
     
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  3. Yorick

    Yorick Funster

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    Have you looked behind the sofa ?
     
  4. pappajohn

    pappajohn Funster Life Member

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    Could be going anywhere......porous radiator core, loose or perished hoses, porous heater matrix, water pump spindle seal, faulty system filler cap.

    Only effective way is a cooling system pressure tester (saves getting burnt on hot metal parts), a good torch and very good eyesight.....preferable on flexible stalks..
     
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  5. gus-lopez

    gus-lopez Funster

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    Took me ages to find the leak on mine. It turned out to be the pump seal weeping a tiny amount when cold. When it was hot it sealed perfectly & when warm level was perfect, but left overnight there would be a tiny amount on the inside of the undertray below the pump which at first was thought to be condensation.
    As others have said could be any joint, + don't forget the inside ones connecting the heater.
     
  6. Techno

    Techno Funster Life Member

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    You should ONLY FILL to the MINIMUM mark with a cold engine. The Max mark is with engine hot. If you over filled it it has probably blown off at high pressure.

    This is why it is called an expansion tank
     
    Last edited: Jun 27, 2016
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  7. Figaro

    Figaro Funster

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    Thanks guys, I'll fill to Minimum as it's a bit below that and see if level stays static.
    If I'm still losing fluid, will a pressure test id source of leak and can any decent garage do it?
     
  8. Titley

    Titley Funster

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    I don't know about your 2.8 ducato engine, but mine has a metal pipe running across the top of the engine and as I was loosing coolant ( could smell it ) I found it had two cracks, common problem apparently . A friend of mine brazed both ends and has been fine since. You could buy a new pipe for £125 from your friendly fiat dealer if its the problem.
     
  9. danielf

    danielf Funster

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    My 2.8 jtd has a slight leaking metal pipe across the engine at the top. I have been keeping an eye on it. ..

    I have bought 2 meters or rubber pipe to replace it with p clips.

    Replacing like for like I think same would happen again.

    Advice I was give by a fiat tech was to dump it but in mean time unbolt it and cable tie it loosely in place so it can move and no stress on the joints. The gearbox end mountain bracket shears this stresses the cam belt end and make it leak

    Daniel
     

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  10. Techno

    Techno Funster Life Member

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    Sorry but I bum steered you on filling
    A picture of mine when cold
    image.jpeg
     
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  11. icantremember

    icantremember Funster

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    Cylinder head gasket or cracked head?
     
  12. The Wino

    The Wino Funster

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    Lets hope its the pipe!!!! he did say no residue under filler cap
     
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  13. Figaro

    Figaro Funster

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    Ok, drove 40 miles today to a site in beautiful Shropshire and had a noticeable coolant loss on arrival. Had a look for leaks but none apparent but then it is like surveying a house by looking through the letter box !
    Do any funsters have any ideas how I can find where the leak is ?
    What does a pressure test show, just if there is a leak or not ?
    The engine runs well and there is no milky residue on the oil filler cap.
    Thanks
    Chris
     
  14. Techno

    Techno Funster Life Member

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    Do you have a hab heater that runs off the engine coolant?
     
  15. Figaro

    Figaro Funster

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    No just the cab heater
     
  16. MikeD

    MikeD Funster

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    A old mechanic once told me to get the engine nice and hot and look for steam after dark using a torch. I have not tried it but maybe it works. (y)
     
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  17. mitzimad

    mitzimad Funster

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    i would get under neath with a good light and look for traces of water around the bottom of the engine rad etc you can often find the track even when dry
     
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  18. Boringfrog

    Boringfrog Funster

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    Interesting colour?
     
  19. Figaro

    Figaro Funster

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    Those both sound good ideas so thanks I'll give them a try next week.
     
  20. Figaro

    Figaro Funster

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    I wondered what that coolant was too.
    Looks like milk shake
     

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