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09-11-2021, 01:43 PM
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#1 |
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Not Yet Wild
Join Date: Aug 2010
Posts: 19
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Honda GX390 jet size
I just did a GX390 install on my 2001 EZGO TXT. Here’s what I have on, NR racing air filter, comet 780 clutch, custom exhaust with a B&S muffler. I plumbed the fuel system using a spacer on the intake with a nipple for a pulse to the stock fuel pump. I put in a Tee connector in the line that feeds the carburetor as a overflow return line to the fuel tank. The problem I’m having is it’s sluggish upon acceleration and backfires through the exhaust. When I switch out and use the original tank for the GX390 it runs fine. Do I need to re-jet the carb?
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09-11-2021, 02:25 PM
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#2 |
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VC 460 CLONE GONE WILD
 Join Date: Oct 2014
Location: Ray BY The Bay NJ
Posts: 10,633
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Re: Honda GX390 jet size
A better way IMHO would be to add an adjustable main jet such as ECcarbs sells. Then you can dial the engine in for optimal performance.
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09-11-2021, 02:49 PM
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#3 |
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Not Yet Wild
Join Date: Aug 2010
Posts: 19
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Re: Honda GX390 jet size
I was doing some researching and that seems the way to go.
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