Need hellp asap on jetting

[01 BANASHEE]

hea whats up ive got a 01 banshee with 3/8intake spacer ,k&n 2into1 ,boost bottle ,fmf fatties with power core 2 ,and 12t with 42t out back ..\

 

now i did have a issue with 1/4 throttle which was fixed with a 30 pilot jet which i installed . but it has a 260 main and yesterday the bike was running ruff and poping so i went home pulled the plugs and they were grey color so it was running very hot "lean" so where do i start for a jet

 

 

heres my location info :

Metres

171m

Feet

561ft

Edited November 16, 2009 by 01 BANASHEE

[SAVAGE420]

I would huck some 280's in and do a PROPER plug chop and go from there. That will proly clean up the lean condition, but do a chop so you will know 100% what the mains are doing at WOT !

 

http://www.dfn.com/benkaren/plugchop.html

 

Heres a good jetting guide, all your questions will be answered there also. http://www.dfn.com/benkaren/plugchop.html

 

Have fun!!!

 

On a side note.. DAMN a 12T sprocket? Your chain isnt binding up any trying to spin around that lil bugger?

[01 BANASHEE]

okea thanks for the help thats wat i thought of throwing in too.

 

 

 

but on the 12t yea it works nasty i had to go that low cause im a big guy and bike seemed to not go good down low ..

[AKheathen]

whoo buddy, you may want to throw a compression test on top of that.......mabey even visually inspect the cylinders, if you wanna catch possible major damage before it happens. grey can be from piston material. also, what is the temps there?

[01 BANASHEE]

well i just put in the 280 runs alot better but now it cheaps back firing when you hold the throotle in one spot ..the back firing goses away if i adjust the air/fuel srew all the way rich then the poping goses away what could be the issue now its right around 50to40 in the day temps