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Enduro Intake/Carburetion - 2 stroke Jetting, Reeds, Air Filters, etc.


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  #1  
Old 05-17-2018, 03:03 PM
taylor146 taylor146 is offline
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Default 18 ec300 jetting

Hi all,
Since I've had the latest ignition map the NEDW needle I was using that seemed slightly rich now seems a bit lean up to 1/4 throttle. Would like to know what needle to use , was considering trying the standard needle again. Maybe NEDH?
Thanks
Darren
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Old 05-18-2018, 01:25 AM
fred99999au fred99999au is offline
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I have a Suzuki NECJ in my 18 GP300. Dunno if that helps due to the different head or not.

Need to find a table of needle specs to work out if it is richer or leaner.
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Old 05-18-2018, 03:44 AM
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Jakobi Jakobi is offline
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J diameter is leaner than W. Going to a H may help with your issue, or bumping the pilot up a size might too.

What clip position are you in? Have you tried going richer?
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Old 05-18-2018, 04:21 AM
Doc Brown Doc Brown is offline
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If its lean up to 1/4 changing the needle wouldnt change that. You can try to close the air screw 1/4 turn wise or take next bigger pilot jet as Jakobi suggested.
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Old 05-18-2018, 03:40 PM
Gottsell Gottsell is offline
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I have the same problem with my std ec300. It work fine before the new mapping. Now i cant get it right. Either it goes very rich or When it goes fine it is detonation
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Old 05-18-2018, 08:27 PM
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Motocrotts Motocrotts is offline
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With the new mapping I'm running the standard needle in the 2nd pos, 170MJ and 40PJ. 2500' and 60 - 80 degs F.
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