This could be someone else problem to!

[wobbleknobble]

I have jetted and rejetted, clean my carbs ,raised, lowered needles, switch mains, pilots, you name it I done it. My bike developed a mis in the right cyl bike would idle fine and run good 1/2 throttle and up just in one little area it would surge and backfire out the right pipe. I searched and have had people to tell me to adjust needle, change pilots,etc. I tore into the bike and removed the reeds to make sure that they were fine, I then tore the carbs apart this time removing the needle jet, this jet on the right carb was completly stopped up. Not in one search did anyone mention this. The needle jet and the needles are two different parts of the carb. I placed everything in the soak tank for a hour or so and rinsed and used compressed air to dry, after getting the bike back together she run like a champ. My bike is a little strange that it like the 280 main,27.5 pilot, air screws out 3, needle on second clip from blunt. I hope this helps others with the same problems that I have had. I still get that little bit of hesitation in the midrange while lugging if I place the clip on the middle ,by leaning out the middle she runs great, any suggetions? I know the pilot is too fat with air screws out at 3 but she pulls better with the 27.5. I have tried the stock 25 and played with air screws, cannot get her to pull as hard. Sorry such a long story I was bored.

[peak-j]

That is exactly what was wrong with mine when I bought it. I had a backfire out of the left exhaust, couldn't figure it out so I pulled the carb and cleaned it. I haven't had any problems since them.

[thack]

it may not have come up in a search .but alot of guys on here say thats one of the first things to look for with carb problems . ive never searched for it but ive read it in several posts

[wobbleknobble]

Now that she's running good again, would I be better to put the 25 pilot back in? Some say that it only affects idle but I can feel a diffence in the midrange it seems to pull harder with the 27.5 with air screws at 3 out. I have the needle on second clip from top , runs like junk on fourth and gets better as you go up to the second. The only flaw I feel I have is if you lug around in tight woods for awhile you have to open it up to clean her out every once and awhile. Plugs are nice and tan after riding open trails but get back into those tight woods they get pretty dark looking. I have run it around with the 25 pilots with air screws out from .5 up to 2 out and it runs better in the tight woods this way ,still have to keep needle on second, just don't pull as hard on the long stretch. Any suggestions?

[thack]

Now that she's running good again, would I be better to put the 25 pilot back in? Some say that it only affects idle but I can feel a diffence in the midrange it seems to pull harder with the 27.5 with air screws at 3 out. I have the needle on second clip from top , runs like junk on fourth and gets better as you go up to the second. The only flaw I feel I have is if you lug around in tight woods for awhile you have to open it up to clean her out every once and awhile. Plugs are nice and tan after riding open trails but get back into those tight woods they get pretty dark looking. I have run it around with the 25 pilots with air screws out from .5 up to 2 out and it runs better in the tight woods this way ,still have to keep needle on second, just don't pull as hard on the long stretch. Any suggestions?

 

 

what mods you runnung and what elevation.im running 280 mains dyno jet needles 4th clip from top withstock piliots 2 to 2 1/2 turns out im at 1000 feet mods are in sig .mine runs perfect.

Edited March 30, 2007 by thack

[peak-j]

With my mods, I run 4th slot on the needle, stock jet, and 1-1/4 turns out on the screw. Mine runs great. Did you synchronize your carbs. If not I highly recommend it. Mine were off a little bit a made a hell of a difference.

[wobbleknobble]

At the present I am running Fattys with power cores with spark arrestors the long ones, a k+n filter in the stock airbox with lid no snorkle, I switched back to the 25 pilot air screw out 1.5 ,stock needles on the second notch from the top, 280 mains in warm, 300 in the cold. Bike runs great at this setup plugs seem fine at all ranges. I thought about buying a set of those Dynajet needles just to have a little more flexability. I found a couple post where others have run there stock needles on that second clip with Fattys, mine runs to rich on the third and just boggs out with the fourth notch. I don't know if the bike has aftermarket reeds or not that sometimes requires the second clip, my reeds are in good shape and are the yellowish color with no cracks or distortion. I have heard that if my reeds happen to be the seven year old factorys, they could be worn and cause a rich condition. But I will most likely replace them in a few weeks just in case. I am open to all ideas. Thanks in advance. Oh yeah carbs are in sync. elev around 1000ft

Edited March 31, 2007 by wobbleknobble