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


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Old 08-25-2019, 12:02 PM
Banditpowdercoat Banditpowdercoat is offline
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Default How often do you change jetting?

Just wondering how often you guys change jetting for temps and such?
I ride same few areas around my house. 1000' up to 7000' elevations. And from damp, 5*c days to 32*c I know I am fat jetted, she runs good, and I mostly am single track/ old overgrown horse logging roads in the BC Rocky Mountians. I haven't changed my jetting, and know previous owner never changed for seasons or temps. SHe is a 98 ec250 with PWK 38. My idle sure does change with elevation and engine temp tho. And the idle stop screw is all the way in. I have to take carb out and record the needles one day.
It's a 1998 EC250

But surely you guys are not taking carb out every day you ride to change?



Last edited by Banditpowdercoat; 08-25-2019 at 05:01 PM.
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Old 08-25-2019, 12:33 PM
Banditpowdercoat Banditpowdercoat is offline
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Ps. My present setting. Not sure if I should change anything?


Idle stop almost bottomed
Pilot 35
Mix screw 1.5 turns
Main 178
Needle N1EC
Clip 3


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Old 08-25-2019, 02:59 PM
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Davehuge Davehuge is offline
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[QUOTE=Banditpowdercoat;191691]Ps. My present setting. Not sure if I should change anything?

What bike and what year is that?

All the best, Dave.
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Old 08-25-2019, 03:57 PM
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It's possible that you have an internal gasket failure in the carb.

You should not have to change your jetting that much.
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Old 08-25-2019, 05:03 PM
Banditpowdercoat Banditpowdercoat is offline
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[QUOTE=Davehuge;191692]
Quote:
Originally Posted by Banditpowdercoat View Post
Ps. My present setting. Not sure if I should change anything?

What bike and what year is that?

All the best, Dave.

Sorry, forgot that. It's a 1998 EC250..

It runs great, no issues other than it smokes a lot (50:1 Interceptor) and plug always rich black.
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Old 08-25-2019, 08:27 PM
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Gasser Nate Gasser Nate is offline
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That n1ec is your smoking and rich black plug issue.
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Old 08-25-2019, 09:08 PM
Banditpowdercoat Banditpowdercoat is offline
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Quote:
Originally Posted by Gasser Nate View Post
That n1ec is your smoking and rich black plug issue.
WHat should I look for to put in?
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Old 08-25-2019, 09:48 PM
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Depending on which 38mm keihin you have fitted it varies. If it is the old round screw cap style I liked the n3eg with a 42/45 and a 178/180 main.
If it is the later two screw cap I?d run the nedw with 42 and a 178. You might need a size either way for your altitude, but once you have it set nice you?ll rarely have to do much other than a tweak of the air screw.
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Old 08-25-2019, 10:03 PM
Banditpowdercoat Banditpowdercoat is offline
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Cool thx, It's the older round screw AS1 carb I'll have to google the n3eg for a source.
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