Idle Problem
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Idle Problem

  1. #1
    Senior Member
    Join Date
    Apr 2012
    Location
    Tucson
    Posts
    127

    Default Idle Problem

    I went to the lake this weekend and came home with a problem that didn't exist last trip. My boat wont idle under load. 18' jet with 468. Running 2 x 600 cfm holley vacuum secondary. It idles fine on the trailer, put it in the water and it will die. I turned up the idle set screws but to keep it running, but when i set one or both just enough to keep it running, I'm in the main circuit and start running rich. I only have 1 trip left this year and will rebuild over the winter but any help would be great. Thanks Steve

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  3. #2
    someofamitch
    Join Date
    Jan 2008
    Location
    Draper, Utah
    Posts
    278

    Default

    Quote Originally Posted by cubegenie View Post
    I went to the lake this weekend and came home with a problem that didn't exist last trip. My boat wont idle under load. 18' jet with 468. Running 2 x 600 cfm holley vacuum secondary. It idles fine on the trailer, put it in the water and it will die. I turned up the idle set screws but to keep it running, but when i set one or both just enough to keep it running, I'm in the main circuit and start running rich. I only have 1 trip left this year and will rebuild over the winter but any help would be great. Thanks Steve
    Check your timing. Something may have moved. Long shot im sure but seen stranger things. And doesn't cost anything.

  4. #3
    Senior Member 74Bonneville's Avatar
    Join Date
    Jan 2013
    Location
    Magic Mountain CA
    Posts
    542

    Default

    My recent idle problem ended up being that my advance springs were broken. Springs lasted about 8 years.


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