Coolant lost

Discussion in 'Diesel Engines' started by W Kendall, Jun 29, 2016.

  1. W Kendall
    Joined: Jun 2016
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    Location: Newfoundland, Canada

    W Kendall New Member

    I have a Perkins Range 4 M135. I recently noticed that the coolant level in the reservoir had dropped. No external leaks to be seen. No signs of anything different in the base. The engine starts easily, and runs smooth. Do I have a serious problem?

    Thanks
    W Kendall
     
  2. gonzo
    Joined: Aug 2002
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    Location: Milwaukee, WI

    gonzo Senior Member

    Most likely the heat exchanger is dumping the coolant out.
     
  3. W Kendall
    Joined: Jun 2016
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    Location: Newfoundland, Canada

    W Kendall New Member

    Heat Exchanger

    Thank You Gonzo. If the heat exchanger is dumping out the coolant, does this mean that the exchanger is shot?
     
  4. gonzo
    Joined: Aug 2002
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    Location: Milwaukee, WI

    gonzo Senior Member

    Depending on the type, it may just be an end gasket. If one of the tubes is leaking, they can usually be welded.
     

  5. FAST FRED
    Joined: Oct 2002
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    Location: Conn in summers , Ortona FL in winter , with big d

    FAST FRED Senior Member

    Most water reservoir on small engines will never stay full.

    As the coolant expands it will be vented by the usuall low pressure cap.

    This is normal, and no worry ,,,IF the less than full level remains the same after the first venting.

    The auto style slobber bottle , with the proper pressure cap could solve this , if you want to bother.
     
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