BENGshee Posted September 19, 2012 Report Share Posted September 19, 2012 Hi i have 01 Banshee with this mods Bored 1 size over FMF Fatty K&N with no lid pro flow adapter Stock carbs with no tors (sinked) and with idle screws elevation 400ft stock pilot jets Mains are 280 1 1/2 turns on mixture screw Starts Right up, but idles oK only on choke If i screw in the idle screws it starts reving When I hit on throttle it stumbles first and then revs. MIDDLE Rev is fine but seems stil not powerfull enough Once in three time about After letting go off throttle it doesn't drop the RPMS right away Help please I think I need to down jet it. Quote Link to comment Share on other sites More sharing options...
cav4ever Posted September 19, 2012 Report Share Posted September 19, 2012 What do your plugs look like Quote Link to comment Share on other sites More sharing options...
JUSTWANNARACE Posted September 19, 2012 Report Share Posted September 19, 2012 Sounds lean.. try a 27.5 or 30 pilot... 310 main.. clip for the needle in the middle... jmo Quote Link to comment Share on other sites More sharing options...
Dalton Posted September 19, 2012 Report Share Posted September 19, 2012 2nd that try 30 pilots 310 mains Quote Link to comment Share on other sites More sharing options...
BENGshee Posted September 19, 2012 Author Report Share Posted September 19, 2012 What do your plugs look like Actually they look black Quote Link to comment Share on other sites More sharing options...
Dalton Posted September 19, 2012 Report Share Posted September 19, 2012 With your current jetting...running the lid on the airbox with vents installed about 12...would probably be spot on... Quote Link to comment Share on other sites More sharing options...
BENGshee Posted September 19, 2012 Author Report Share Posted September 19, 2012 Sounds lean.. try a 27.5 or 30 pilot... 310 main.. clip for the needle in the middle... jmo I am trying to get jets But even al jet kits don't sell all stuff i need I was told that the motor runs rich oposite but the idle is lean What you think about this Quote Link to comment Share on other sites More sharing options...
BENGshee Posted September 20, 2012 Author Report Share Posted September 20, 2012 The spark plugs are actually black too So this is running to rich isn't it??? Quote Link to comment Share on other sites More sharing options...
Screaming Meemie Posted October 6, 2012 Report Share Posted October 6, 2012 I have the same mods (except for the overbore) on my 06 & at 480ft in MN i ran 240 mains & stock everything else on the stock carbs w/o tors & it was perfect. as it happens i had similar idle & rpm 'stick' problems too, it turned out my needles were bent at the tips... replaced em & it was 100%. maybe go 250 or 260 on the mains for overbore? hope that helps. Quote Link to comment Share on other sites More sharing options...
Jereme6655 Posted October 6, 2012 Report Share Posted October 6, 2012 The pilot jet handles from 0- 1/8th throttle The needle handles from 1/8-3/4 And the main jet handles from 3/4 on...... That being said FMF pipes really like 27.5 pilots. the main being around a 280ish seems decent.....maybe 290 if you have pod filters. The reason it is not coming down smoothly and quickly to idle is because it is starving for fuel........remember......2 strokes will free rev or rev hang when they are run lean on fuel. You can order jets online or from our site sponsors.........watch out though....while I've found mikuni main jets at snowmobile stores that will work in the stock carbs.......the pilots are banshee specific..... Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.