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May 11th, 2017, 04:18 PM   #1
JB3
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I Ride: 2004 FE650e
2004 FE650 Jetting for Southern Colorado

I plan to ride in So. Colorado in July with a buddy. We will be hitting a few mountain passes. A few years ago I was near Frazier CO and the jetting was way too rich. Does anyone have recommendations?

I am currently at about 1000 ft. in TX with the following settings:

Carb: FCR 41, main: 160, slow jet: 85, pilot jet: 48, Needle clip 4th slot from top (7 total). ( Could not find Needle code) Air screw: 2 turns out from seated.

It doesn't need to be spot on, but reasonably crisp. I will only be running it a few days at this altitude. BTW, what a pain to get to the carb for adjustments!!

Thanks.
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May 12th, 2017, 03:08 AM   #2
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that should be good. 160 is borderline at sea level so should hold up at altitude.

the 48PJ is too big though for any height. wants to be a 42PJ and that will also do for the trip.

because you don't know the needle code there is nothing else that can be said with any certainty.

the '85' is your choke jet BTW!

try and get an extended pilot screw for easy adjustment.

regards

Taffy
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May 13th, 2017, 05:47 AM   #3
JB3
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Thanks for the clarification on the choke jet and the existing settings.

I'll change the pilot jet to see if that improves the situation.

The bike has the extended pilot screw, but I have never changed it. Is this an adjustment I would need to make as altitude increased? In or out?
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May 14th, 2017, 02:37 AM   #4
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well no, you're going to ride the bike till you stop unless your bum looks big in that dress....

set it for best running at sea level and then just grin and bare it to the top. you can't really adjust out troubles when the PJ is so juicy. 42 gives you half a chance but a 48.....well, I'm ready to cry for you if you run with that!

Taffy
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May 15th, 2017, 05:29 AM   #5
JB3
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As I said, I plan to change the pj to 42. I understand that my 48 is too large.

I am willing to change the pilot screw setting. I was just making a comment that I never have changed it from it's original setting. Is the pilot screw an adjustment that needs to be changed as the altitude increases?

In other words, if I change the pj to 42, are there any other setting changes I can make, either at sea level or at altitude, that will improve performance. and specifically, will changing the extended pilot screw setting as the altitude increases help?
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May 15th, 2017, 07:19 AM   #6
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screwing IN the pilot fuel screw will make the idle leaner, which helps the bottom end as you go higher in altitude. if you can't find a needle code, does it have a splash of color (jd kit?).
i too will be in sw colorado on my fe650e in july...gunnison, ouray and dolores. (and mine has a 42 pilot)
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May 15th, 2017, 11:10 AM   #7
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Thumbs up

Thank you. Very helpful. I was wondering if making changes to the screw 'on the fly' would make any difference. Sounds like it would.

Last summer I had to rebuild the carb due to leaking fuel and general neglect. While I had it apart I documented the jets and settings. However, I could not find a needle code anywhere and do not remember a color code. I bought the bike used and the previous owner may have jetted. Someone mentioned that Lineweaver(?) may have had a needle with no markings. I have no idea about that.

Any suggestions as to the fastest, easiest way to get access to the jet for a swap?

I need to find a source for a 42 - local or online.

I might need to get your cell number! I could find out how a 650 is supposed to run and you could tell me what is wrong with mine. We will be getting lost in the same general area around 7/15 - ? My riding buddy lives in Boulder and knows the area. I am in TX and looking for some cooler weather and change of scenery.

BTW, I am hoping to pick up sponsorship from the same organization soon!
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May 15th, 2017, 11:23 AM   #8
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making changes to the screw 'on the fly'
i always recommend stopping first unless you have an extra eye and really long arms
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May 15th, 2017, 12:47 PM   #9
JB3
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"i always recommend stopping first unless you have an extra eye and really long arms "

What's the fun in stopping?
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May 16th, 2017, 03:02 AM   #10
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my earlier needles had the codes ground off crudely and no paint.

Taffy
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