1988 250 WR jetting?

Justin do you what size i am after?

Its way blacker than my other bikes with the same gas and oil.

hmmm, well i cant say since my 88 250 runs stock jetting..but if you are still using the stock carb and stock needle jet, you can use this chart to see the available sizes. you will need the "p" style..if the bike runs well now, the next size will put the clip back to the middle. then you will be back to having some tuneability

So i am still trying to sort this out still. So i pulled the needle jet out, i had a Q6 in this carb.
Had to order a P and a O6, i tried both with the clip back in the middle and the bike dies from a lack of fuel. Starts and revs ok but when you let out the clutch i get 20 feet and bike wants to die.

Thoughts???

are you getting full fuel flow to the carb? tank vent isnt a home for a spider? havent knocked the float level?? it sounds lean as...try with the choke, if its ok till you flick it off then youve gone too far? leaning out. BE CAREFULL! seizure country

Good fuel flow and reset the float level both ways for a try, ended up setting the float back to normal.

I did some reading on various sites.
I went back out to the shop and pulled it apart 1 more.
I had to raise the pilot jet from 35 to 45 to fatten up the 0 to 1/4 fueling.
I put the P6 back in and raised the needle, clip in bottom slot. Took the Q6 out again. (had it in again for a test) Perhaps the Q is right but worn badly?
Went for a spin, wow its working awesome. Got a nice tan on the porcelain and a brown strap.
Was a new plug, not black or white any where so i must be some what in the zone.

needle jets do wear...but the next leaner from a q6 would be q5, p6 is a big jump leaner!

yup... like 10 sizes leaner.