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What's normal, fuel coming from venturies at idle

Discussion in 'The Garage' started by mrk5, Jul 11, 2005.

  1. mrk5

    mrk5 The Sticker Guy Moderator Vendor GMOTM Winner Author

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    I've been trying to figure out a problem with a rough idle. It typically develops as the truck runs at idle to low speeds on the trail. The truck starts the day running great and as the day goes it begins running worse and worse.

    This last time I pulled the lid off the air cleaner and observed what to me seemed like too much fuel entering the primaries. From the area indicated below.
    [​IMG]
    I would call it a dribble. It was more that just dripping.

    Does it sound like too much fuel?
    If so what could be the cause?
     
  2. R72K5

    R72K5 Banned

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    yes too much, if is doing that with throttle not being depressed

    something is wrong

    sunken or stuck float, dirt under needle seat, something


    also make sure air horn assembly screws are all tight- that its not sucking fuel from bowl area past the gasket

    but if its definitely coming from the jets you are pointing at and no where else then its an internal problem


    good luck
     
  3. mrk5

    mrk5 The Sticker Guy Moderator Vendor GMOTM Winner Author

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    Okay thanks. Funny as it sounds, that's good news. I been having this problem for a while and haven't been able to pin it down. Thanks to a suggestion from dyeager535 I found this problem. Now maybe I'll get the truck running correctly.
     
  4. miniwally

    miniwally 1/2 ton status Premium Member

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    What is your fuel presure?
    All of the above items are correct but I will add maybe your fuel presure is hgh and pusing fuel past the needle and seat?

    I don't know what else besides what has been mentioned it could be.
     
  5. mrk5

    mrk5 The Sticker Guy Moderator Vendor GMOTM Winner Author

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    I've thought of fuel pressure, too but haven't actually installed a guage yet.

    If I stick with the carb, I'll have that potential problem taken care of. I have plans to install a pressure regulator so I can dial it down to 1 or 2 pounds for the trail. So, if the pressure is too high I'll have that problem licked.
     

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