03-18-2024, 12:12 PM | #1 |
Not Yet Wild
Join Date: May 2022
Posts: 9
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Duromax 420 idle too high when warm
Good day.
I have swapped a Duromax 420 into my golf cart. I can get the idle set great either when the engine is cold or warm but not both. It will idle with the choke on when cold but will idle to high when the engine is warmed up. Conversely it when the idle it set when warm the cart will not idle when started cold. I have replaced the stock carb with a carb with an adjustable idle screw and have tried many idle jets. I also have an adjustable main jet but I cannot get a reliable idle speed at different engine temperatures. If anyone could help that would be appreciated. |
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03-18-2024, 06:09 PM | #2 |
VC 460 CLONE GONE WILD
Join Date: Oct 2014
Location: Ray BY The Bay NJ
Posts: 10,593
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Re: Duromax 420 idle too high when warm
One idea is the low speed idle jet is too lean. Go Vegascarts technical blog and on page 3 is carb tuning 101. Scroll down until you see the instructions for opening up this part.
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