my elevation is 3000ft, my plugs are you could say brownish color. and no i did not adjust the carb needle. i dont know were it is, or how to adjust it.

 

At 3K feet your probably OK with the 165. YOu can fatten up the midrange (DS likes a lot of fuel in the midrange) by adjusting the needle DOWN one clip position. It is located on the top of the carb underneath the diaphram cover. YOu will want to get a set of needle nose pliers to move the clip and make sure you dont loose the little spring or washers that is in there when removing. Its pretty simple just go slow when removing. How does it run now that you fixed the intake?

 

it runs great now that the intake is back togeather, im going to try and do what you said with the needle clip. will that make the bike faster. also thanks for your help.

 

If its lean in the midrange (which I suspect) then fattening it up will help mid range torque. Carb adjustments are all about trial and error.... You'll never know until you try.

If you haven't already read through "OMR stock carb mod" summary thread I highly recommend.

 

on the stock carb mods,do i need to take the carb off of the bike? or can i do them with the carb on the bike. also when it come down to drilling the holes in the carb, im not quite sure were to drill exactly. can you tell me.

 

what differance will it make if i adjust the needle down 2 clips or even 3, how far can i go before im gone to far.

 

With a 4 stroke (Especially on the DS), small changes can make a very big difference.
Drop the clip down 1 notch (Raising the needle) like was suggested above. You can absolutely try another notch if you want, but make the changes 1 at a time and then test ride it.
Adjust your pilot air screw to 2 - 2 1/4 turns (OMR, what about air screw vs. altitude?). The pilot screw is accessable from outside the carb - It is underneath and located toward the front of the carb (In front of the float bowl).

 

Stock Needle and Mikuni Jets:
Pilot - 4 turns out
Needle Groove - 4 down from top-trail 5th is for drag only Will load up plugs when riding trails
3000ft - 165/170
Lid-On

 

i took you guys advise,omr,dsengineer,sport400inoh, i went out today and went up against that kfx700 again, man i smashed that bike, i must have beat him by, atleast three bike lenths. he got me on the take off, but i finised him off, thanks again. you guys are awsome.

 

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