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Technical Fluid spitting 350.

Discussion in 'The Hokey Ass Message Board' started by TDak, Dec 4, 2017.

  1. TDak
    Joined: Oct 20, 2006
    Posts: 36

    TDak
    Member
    from Oshkosh

    It's a mild 350 in a tri-five that spits black fluid out both exhaust pipes. No smoke. It seems to occur even at idle. Carb is a Holley. Possibly too much carb? Thanks for any ideas.
     
  2. squirrel
    Joined: Sep 23, 2004
    Posts: 55,934

    squirrel
    Member

    Sounds normal to me. The black stuff is carbon (soot), the liquid is water. These are normal products of combustion.
     
    tractorguy, Clay Belt and Hnstray like this.
  3. Deuces
    Joined: Nov 3, 2009
    Posts: 23,752

    Deuces

    It's early morning dew....
     
  4. indyjps
    Joined: Feb 21, 2007
    Posts: 5,377

    indyjps
    Member

    How do the plugs look?
     

  5. Model A Gomez
    Joined: Aug 26, 2006
    Posts: 1,695

    Model A Gomez
    Member

    Like squirrel said it's normal and should quit when the engine gets up to operating temperature. If the inside of the exhaust is black and sotty it is probably running rich.
     
    rfraze likes this.
  6. TDak
    Joined: Oct 20, 2006
    Posts: 36

    TDak
    Member
    from Oshkosh

    Thanks guys. This happens after warm up as well. Plugs are fouled.
     
  7. Deuces
    Joined: Nov 3, 2009
    Posts: 23,752

    Deuces

    Change the jets to 2 numbers smaller and see if it cures that problem....;)
    Also install a new set of plugs...
     
  8. Morrisman
    Joined: Dec 9, 2003
    Posts: 1,602

    Morrisman
    Member
    from England

    Have a look down the carb when it is idling, see if you see fuel dribbling in big drops. I had an Edelbrock that kept doing it, some stupid tiny air hole was blocked. I had reset float level a dozen times, cleaned the snot out of needle valves repeatedly, to no avail.

    Google eventually showed me the problem.
     
  9. squirrel
    Joined: Sep 23, 2004
    Posts: 55,934

    squirrel
    Member

    I would do a little more troubleshooting, before changing jets. There are a lot of possibilities that will make a carb run rich, under different conditions. Stock jetting is usually ok, but the float level, choke operation, idle mixture, and (as shown above) simple dirt, can cause problems.
     
    Hnstray likes this.
  10. TDak
    Joined: Oct 20, 2006
    Posts: 36

    TDak
    Member
    from Oshkosh

    Thanks again everyone.
     

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