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I think I have Carb Problems


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Just came up from rebuild couple days ago, bottom up everything is new, I've been breaking it in and noticed it has been a little hesitant in low end and then when you get to top end it bogs after half throttle, i took the plugs out one side it nice and dark but not to dark and the other side is a little bit lean, The only mods i have are tommey t3 headers stock silencer k&n filter with lid off airbox & lightened flywheel, the carb has 260 mains in them, I just cant see how my g/fs raptor is outrunning me on road when he only has lile bolt on nothing major besides his gytr pipe. anybody have any suggestions? banghead

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Just came up from rebuild couple days ago, bottom up everything is new, I've been breaking it in and noticed it has been a little hesitant in low end  and then when you get to top end it bogs after half throttle, i took the  plugs out one side it nice and dark but not to dark and the other side is a little bit lean, The only mods i have are tommey t3 headers stock silencer k&n filter with lid off airbox & lightened flywheel, the carb has 260 mains in them, I just cant see how my g/fs raptor is outrunning me on road when he only has lile bolt on nothing major besides his gytr pipe. anybody have any suggestions? banghead

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So your saying that I need a new topend even after i just replaced it, if that is so how am I supposed to even tune this thing in without it frying my topend if the jets are wrong? I messed with it all day I have 210s I put them in and it seemed to run a little bit better both plugs equaled out running a little lean but the plug is light brown, Everyone has told me to run between 210's and 260's. Also how do I check for an airleak? :shootself:

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Ok here it is:

Lightened flywheel

Wiseco prolites

boyesen carbon reeds

airbox lid off w/ k&n filter

Toomey t3 headers w/ stock silencers

 

carbs have 25 pilots,

and currently I have 210 mains now. I had 260 mains

the air screw is 2 turns out

 

it feels like it is getting hotter tan usual it is hard on the take off real sluggish and top end isnt great niether. I did a search on here on how to do a WOT plug chop but all the links are dead, Also can you tell me how to check for an airleak?

Just wanted to clarify everything. thanks

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depending on elevation

 

stock pilots, needle in the 4th clip, some 300- 340mains

 

that would be close at 900 ft.

 

if your higher elevations 380-320 mains

 

 

sea level320-360 i would say

 

your bike is hot because its beyond too lean so its hotter

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Stock banshee's have anywhere from 200-220 mains...you really screwed up when you put the 210's in (way lean, makes it really hot) how long did you run it with them in? Get 300-330 mains (start with 330's and work your way down) and put in 27.5 pilots. Here is a good web page on jetting Jetting FAQ.

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Alright This morning I put 300's in and now its running rich and hard to keep cleaned out, and it doesnt have the ass behind it on the top end niether.

I did find the reason one cylinder was lean, the header came loose from the silencer, so pretty much that cyclinder was breathing good i guess. I knew I'd have to tune it so i didn't really ride it just up the orad not even half mile then back around the back yard then I'll pull the plugs and see what they look like so far I czant get that nice borwn look im looking for always a lil on lean side or like today plugs are are black looking and a little wet. banghead

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my bad,

oil ratio is 40:1 Klotz 93 octane

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That should be fine.Might try a 280.Might first try staying with the 300 and move the clip up one notch on the needle.It's mostly trial and error.

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