Sputters when cold Runs great when warm?

[Jdawg82]

My banshee spits and sputters when it is cold from 1/8 throttle all the way to 3/4 but after that it clears up. When it is fully warmed up it runs awesome anywhere on the powerband or throttle postion. Do I have to adjust my air screws and pilot or is there something else I need to take into consideration? I have toomey t5s with fmf silencers, a woods port job, +4 advanced timing, and weisco prolite pistons. My compression is damn near perfect at 130 psi with the stock head at 1,000 feet.

[Fireman-hott]

try and richen the needle some by moving the clip. I forget off hand which way does which.

I think down richens and up leans but dont take that as the holy word.

[wayfst]

yea, down to richen. better yet don't let it warm up and hold it open for a second or two then you won't have to worry about.

[fixitrod]

Can you be a little more specific. Usually sputtering means it's to rich... But I'd agree it's the needle. If the bikes cold, I'd just let it warm up before riding it.

[bigboybanshee]

I'd just let it warm up before riding it.

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[rebelbanshee2]

you said it yourself. Its cold. I wouldnt give it abouve 1/8 throttle until its warm. Expecially with those wisecos in there.

[BansheeBrian]

I start mine and just let it idle for 3-5 minutes before i even think about going near the throttle.You would be suprised how cold things are in there after only a 2 minute warmup.

[Jdawg82]

It ended up being a filthy air cleaner. It was caked in mud and starving my motor for air. Cleaned it up and all is well. I moved the needle to the second clip from the blunt end. Can running too lean of a needle damage your engine the same way running too lean on the main can? I have ported cylinders, weisco pistons, toomey t5s, +4 timing plate mod, boysen reeds, stock box with no lid and a uni filter. I know that the only way to really tell is to do a plug chop however I just want to see what you guys think about my current carb settings.

[fixitrod]

Moving it one clip to lean won't melt your motor. Too lean is never good. If it runs better with the needle dropped then leave it that way.