Results 1 to 4 of 4
  1. #1
    Platinum Member
    Join Date
    Jun 2002
    Posts
    512
    Location
    Northern Illinois
    Tractor
    Kubota BX2660

    Default Snake Under the Hood

    I have a B7500 with only about 35 hours on it. Recently, in colder weather start-ups, I notice a hissing noise when I first start-up the tractor. After it warms up, it goes away. It sounds like its a blow-off somewhere around the engine, but I can't define it. I am used to a waste gate opening on my Powerstroke when it's cold, but is there such a thing on a little kubota? Hiss Hiss Hiss. [img]/w3tcompact/icons/laugh.gif[/img]

  2. #2
    Veteran Member
    Join Date
    May 2000
    Posts
    1,125
    Location
    Escaped to The Algoma

    Default Re: Snake Under the Hood

    Could just be an exhaust leak caused by metal contraction during colder weather. Once it warms up and expands it goes away.

  3. #3

    Join Date
    Aug 2001
    Posts
    472
    Location
    Central NY
    Tractor
    Kubota B7500HSD

    Default Re: Snake Under the Hood

    My B7500 does the same - has never caused a problem that I'm aware of - a little over 200 hours now

  4. #4

    Join Date
    May 2002
    Posts
    579
    Location
    Harrisburg, Illinois
    Tractor
    MF 165, Kioti 2554

    Default Re: Snake Under the Hood

    I had a four wheeler once my grandfather rode from hi house to ours every morning and back to his place each evening (about 100 yards). When I rode the four wheeler for a longer period it would hiss and finally got to the point where the hissing got louder and would kill the engine. Turns out the short trips would create condensation which settled in the muffler. As the engine warmed up it boiled the water and expelled the steam. Once we ran it long enough to evaporate all the water it stopped. We began to let it run each weekend for a couple hours to keep the moisture from accumulating and it never happened again. Mechanic told us that's why most four wheeler exhausts rust out. They don't get run long enough in winter. If you only make short runs in winter could be your situation too.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
© 2014 TractorByNet.com. TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners.