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


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  #1  
Old 05-19-2014, 12:58 PM
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Quote:
Originally Posted by Jakobi View Post
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If the level is right and its still overflowing double check the viton tip on the float needle. Sometimes they perish, othertimes they just have a bit of grit stopping it from sealing.
Thanks Jake - that's much better than the one I ended up finding:

http://www.carbparts.com/keihin/need..._your_carb.htm

Definitely appreciate the close-up shots with text on 'em - that guy did a good job.

It ended up being the viton tip...sort of. Did you know that if that piece doesn't go back into the fuel inlet that the bike will piss fuel like it's raining

Yeah...should always remember the KISS principle when something goes pear-shaped...lol.
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Old 05-19-2014, 01:22 PM
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Hahaha! That will do it!
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Old 08-28-2014, 04:26 AM
@enrico@ @enrico@ is offline
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HI guys, I'm a new Italian Gasgasser
I've got a 2013 ec 300.
Just a problem: white plug with 40pj N1EF SECOND CLIP 175mj

After slow riding the plug is black and wet but after 300 m fast uphill become white and dry.

The bike runs good but in the long fast uphills there is some lose in power or little bogs ( I'm not sure about the last term ).

The bike was brand new but the mechanic set the float before deliver it to me.

Yesterday I checked the float level and I found between 8 and 10 mm so I hope I found the trouble.

It's more difficult to adjust the float in new PWK vs Mikuni tmx because the pin is so close to the tab the I can't see exactly when the contactoccur.

I hope I have lowered the float up to about 7.5 mm.
The bike does not pay gasoline up to high inclination, do not understand how others do to say that pours on the stand.

If not fix the problem I'll try a 185 mj....

Other ideas?

Thank's
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Old 08-28-2014, 06:18 AM
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What main jet is in it now?
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Old 08-28-2014, 06:22 AM
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Quote:
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What main jet is in it now?
175, take a look to the top of my post
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Old 08-28-2014, 06:25 AM
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Just read the last one. Im too lazy to go back. Somwtimes irs mant posts back.
My suggestion is try a 180 first. Then 182. Then 185. You may be jumping too far with a 185.
That is if you havent already tried it and posted it above.
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Old 08-28-2014, 06:30 AM
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Ok I see it now. . 175
Try a 180. Get rid of the needle and get a NEDW set at #2
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Old 08-28-2014, 07:48 AM
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Quote:
Originally Posted by bkwdc View Post
Ok I see it now. . 175
Try a 180. Get rid of the needle and get a NEDW set at #2
Thank you for the answer but I'll jump to 185 looking for the right direction.

The actual color of the plug after short uphill at 3/4 or more ( non wot ) is not meaning little poorness so I'd like to see dark brown....then reducing in MJ.

But I've never read anyone using a mj bigger than 175 with this needle ( N1EF )

The mileage is about 9 - 10.5 Km/l according to the track.
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Old 08-28-2014, 04:20 PM
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The stock needle is the problem. You've lifted the clip to #2 to clean up the lower to mid, which has left it lean in the mid to 3/4 range. You may find a 178 main helps too (check after you've set the float). But overall, the taper profile of the stock needle doesn't work very well. I'd try an NEDW # 3 based in what you have said.
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Old 08-29-2014, 02:13 AM
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Quote:
Originally Posted by Jakobi View Post
The stock needle is the problem. You've lifted the clip to #2 to clean up the lower to mid, which has left it lean in the mid to 3/4 range. You may find a 178 main helps too (check after you've set the float). But overall, the taper profile of the stock needle doesn't work very well. I'd try an NEDW # 3 based in what you have said.
The bike was tuned by an official Gas Gas Italia racing mechanic, directly by the importer from which I have served.
So I'm a bit surprised by this problem that I hope is only carburetion and not suction air Junk (brand new bike).

I've tested also an half clip leaner needle ( NOZF AND NOZH ) in the same groove and in fact the plug color was more white ( if it's possible ).
I've got an NECJ ( half clip leaner than your suggested ) but I'd like to know its profile shape vs NOZX or N1EX. Unfortunately on the Jd jetting sheet is not included.

Are you sure your suggested isn't an half clip different from other known needle?

Any case jumping to 185 mj cover the mid top also and the MJ is very easy to find than needles.

Last one...in my hold pwk on HUsky wr 250 the best was DDJ needle in the mid range precisely because of its high angle of progression that is not found in the oem needles.

Bye
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