250R running poor

[hdd]

ok I have 2 84 250R's now one runs great after I changed from a 140 main jet to a 130 both has some sputter until I make a couple of runs then run great. the other one sputters a little more then once I run a little the sputter goes away. On the one running poor until it gets warmed up I am running a 128main jet, good compression I think its something with the carb. I have rebuilt the carb., new reeds, new plug and it looks good light brown but for it to idle I have to turn the idle screw all the way in.
http://youtu.be/nT6UjYVl4ZM (Running good)
http://youtu.be/iemLVS93Bsc (Running poor until it gets warmed up) towards the end you can see it running pretty good.

[yaegerb]

How many turns out is the air screw?

[hdd]

1.5 tried it several different ways

[yaegerb]

is 1.5 where it is the most crisp......meaning, you blip the throttle in neutral and it revs up and down quickly with no hesitation?

[frankydodo]

Well i thought it was normal for an air cool 250 to act like that when cold. Mine is doing the same and after 2-3 minutes of easy riding its running perfectly.

Edit: you run a 128 main and stock is 130. Why?

[hdd]

Put 128 to see if it cleared it up but didn't mKe much difference

[barnett468]

.
If the gas is old it can cause running probs . . if there is rust in the tank, iy can contaminate the gas.

Check the float level . . If it is excessively high, it can cause a rich or flooding condition.

..................Here's an example of it a little too high . . It should be just below the solid black line in your case . . If it is at the dotted line, it will still not cause a problem even though it is just a little high . . If if is above the dotted line, I would definitely fix it by bending the small metal tab slightly that depresses the needle, slightly upward toward the top of the carb.

If the float is plastic, it requires heat to bend it, and this should only be done by someone whom is very experienced, otherwise you might end up with a puddle of melted plastic which will no longer fit very well.

.................................http://ww2.justanswer.com/uploads/motoforge/2010-08-01_013312_Float_level_adjustment.jpg


............................................. Here's another in which you can see the is level way too low.


........................................http://www.bbburma.net/FujiFotos/FloatHeight/DSCF2434.jpg[/QUOTE]

[hdd]

Thank you the only problem checking that way on the 84 R it doesn't have that bowl drain screw.