air/fuel mixture screw

**Nessism** · 06-19-2009, 05:23 PM

Looks like the right cylinder is running rich so it doesn't need anything more from the pilot circuit. Maybe the float height is too high? Not sure.

**rustybronco** · 06-19-2009, 05:30 PM

My initial guess is that it may be a float (and/or) a float level issue and fuel has washed the coloration off the plug. it's either running rich, or the plug isn't firing because of no spark getting to the plug, or a bad plug.

can you check the float level(s) by making a fitting to go into the drain screw hole and check the fuel level(s) externally with a clear tube?

**Guest** · 06-19-2009, 05:41 PM

Here's another "fuel problem" suggestion - check out this thread:

What's my next move - #3 plug STILL BLACK !! - The GSResources Forums

http://www.thegsresources.com/_forum/showthread.php?t=132691&page=5

This forum contains old posts which may have information which may be useful. It is a closed forum in that you can not post here any longer. Please post your questions in the other technical forums.

Maybe a corroded jet needle seat??

Good luck...

**Guest** · 06-19-2009, 05:48 PM

ok if this happens to be my problem just where did you find the new needle jets at?

**matt_gs450** · 06-19-2009, 05:49 PM

rustybronco: i have an extra drain plug and have wanted to do that as well (make a measurement gauge). Can you recommend how to do that?

Thanks,
Matt

**Guest** · 06-19-2009, 05:54 PM

i second that Matt. i have a couple of extra drain plugs laying around. as to what Hikermikem posted for me. I do know that they are kind of scratched up on the outside. i've been trying to locate some new ones but cant find them anywhere. i even tried googling them.

**BassCliff** · 06-19-2009, 06:06 PM

I hate to ask, but in what are you holding this plug?

Thank you for your indulgence,

BassCliff

**matt_gs450** · 06-19-2009, 06:08 PM

I'm glad I'm not the only person who thought that when I saw that picture.

**matt_gs450** · 06-19-2009, 06:10 PM

Oh, and kparkfan... I would love to find a supply of needle jets (and other hard to find parts for this carb) as I'm down to my last two good ones in my two good bikes.

**Guest** · 06-19-2009, 06:10 PM

Those are my wifes boobs lol j/k those are my knees lol

**rustybronco** · 06-19-2009, 07:02 PM

Originally posted by matt_gs450

rustybronco: i have an extra drain plug and have wanted to do that as well (make a measurement gauge). Can you recommend how to do that?

Thanks,
Matt

Drill a small hole through the center of it and attach a hose nipple* to it.

* a barbed connector

**Guest** · 06-19-2009, 08:34 PM

Ok heres what I found when i took the carbs apart. one of my needle jets has a bad oring and is loose as hell. Think i just found the reason for it being a pain in my butt. now the question is, does cycle-orings sell individual orings. or should i just order it from my dealer.

**Nessism** · 06-19-2009, 08:45 PM

Originally posted by kparkfan

Ok heres what I found when i took the carbs apart. one of my needle jets has a bad oring and is loose as hell. Think i just found the reason for it being a pain in my butt. now the question is, does cycle-orings sell individual orings. or should i just order it from my dealer.

Did you replace ALL the o-rings recently? If not, get the kit and go though the carbs.

**Steve** · 06-19-2009, 08:46 PM

For the cost of an o-ring or two, plus shipping, you can probably order a complete set from cycleorings.com.

.

**Guest** · 06-19-2009, 09:11 PM

yeah i just replaced them. i must have shredded it somehow trying to get it in the hole. I usually pic my stuff up fom southside plus i have to order a couple other things and im only needing the one oring and they have them for 74 cents. so do you guys think that it being loose is what was causing my troubles. letting gas get by or something.

air/fuel mixture screw

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