Osen007 Posted February 19, 2014 Report Share Posted February 19, 2014 Just put on mikuni 28 mm flat slide carbs. Started up fist kick and idles like it's at half throttle, I checked the cable and the slide in the carb it looks perfect, I have stock motor, toomey t6 pipes, force reeds and uni foam filters. 2005 banshee. I turned the idle screws on the side of the carbs all the way in and backed them out 1/2 turn. I have 300 main jets in and it's 30 degrees out in Detroit Michigan, if I take the filters off and hold my had a 1/4 inch or so in back of the carbs it idles perfect like restricting air, before I take the carbs apart any ideas, Quote Link to comment Share on other sites More sharing options...
uman1030 Posted February 19, 2014 Report Share Posted February 19, 2014 assuming you mean air/fuel screws that you adjusted to 1/2 turns out. have you tried adjusting the idle lower? if you did mean the idle screws at 1/2 turn out then adjust them more out. Quote Link to comment Share on other sites More sharing options...
BUILDER Posted February 19, 2014 Report Share Posted February 19, 2014 Just put on mikuni 28 mm flat slide carbs. Started up fist kick and idles like it's at half throttle, I checked the cable and the slide in the carb it looks perfect, I have stock motor, toomey t6 pipes, force reeds and uni foam filters. 2005 banshee. I turned the idle screws on the side of the carbs all the way in and backed them out 1/2 turn. I have 300 main jets in and it's 30 degrees out in Detroit Michigan, if I take the filters off and hold my had a 1/4 inch or so in back of the carbs it idles perfect like restricting air, before I take the carbs apart any ideas, Are you adjusting the idle screws or the air screws? I am guessing you ran the idle screws all the way in and backed them out half a turn and that would explain why it is idling the way it is. Quote Link to comment Share on other sites More sharing options...
Osen007 Posted February 19, 2014 Author Report Share Posted February 19, 2014 (edited) The idle screw I can turn by hand, I turned that a 1/2 turn out, Builder so what your saying is turn them idle screws more out like maybe 2 turns out? Edited February 19, 2014 by Osen007 Quote Link to comment Share on other sites More sharing options...
uman1030 Posted February 19, 2014 Report Share Posted February 19, 2014 You'll need to back them out more then 1/2 turn each to get a lower idle speed. Quote Link to comment Share on other sites More sharing options...
BUILDER Posted February 20, 2014 Report Share Posted February 20, 2014 You need to back the idle screws all the way out till the slides drop as low as they will go then start it and adjust them up a little at a time till it idles. No way to know how many turns you will need them. Quote Link to comment Share on other sites More sharing options...
Osen007 Posted February 20, 2014 Author Report Share Posted February 20, 2014 You guys are awesome just turned them out like you all said and got it to idle good, my vacuum tester is coming in the mail so Friday I can really dial it in. I youtubed how to sync the 2 carbs at low idel and half throttle so I hope I can get that right lol. Thanks again guys Quote Link to comment Share on other sites More sharing options...
BUILDER Posted February 20, 2014 Report Share Posted February 20, 2014 Now that you have those set to where it will idle next is do you have your air screws adjust right? If you just adjust the slides by eye and make sure they are both lifting at the same time when you hit the throttle you will be plenty close enough to ride it. Quote Link to comment Share on other sites More sharing options...
Osen007 Posted February 20, 2014 Author Report Share Posted February 20, 2014 Oh god builder there's more lol, we'll I got it idling really good, the carb slides look pretty perfect in sync, how will I know were the air screws need to be, adjustment wise? It revs up fine in neutral, I didn't ride it yet because the neighbors will kill me it's 8 pm Quote Link to comment Share on other sites More sharing options...
Young Guns Racing Posted February 20, 2014 Report Share Posted February 20, 2014 Air screws should be close to the same adjustment for each other. Syncing idle is easy. Syncing at 1/4 throttle or higher is time consuming but still simple. U have to be sure the throttle is held steady and you will have to adjust the cables via the cap screws to pull evenly. Once you've got it all, lock her down and go for a ride. Quote Link to comment Share on other sites More sharing options...
Strm Trpr Posted February 20, 2014 Report Share Posted February 20, 2014 with the bike off and the filters off, can you snap the throttle and hear an audible clack when the slides slam shut? If not, adjust the cable at the throttle. If still no clack, turn the idle screws out while watching the slides lower down until they stop. Now snap the throttle open and listen for the clack. If you hear the clack, turn your idle screws in until they just lift the slides approximately .020-.040". Now turn your airscrews in and seat them, but not too tight. Then turn the both out 1.5 turns. Next, look at the slides from the inlet of the carbs. Slowly push the throttle until the slides start to move. Do they lift off at exactly the same time together? If not, adjust the carb cap cable adjusters to lift the slides at the same exact time. Once dialed, you should be able to start the bike and if it doesn't idle turn the idle screws in the exact same amount. Next adjust cable free length at the throttle. You want about 1/8" free play. If it is still idling high, then I can't help you any further from my keyboard. Quote Link to comment Share on other sites More sharing options...
Osen007 Posted February 20, 2014 Author Report Share Posted February 20, 2014 Thanks strm trpr, I will mess with it Saturday, all this in put is great guys..... Quote Link to comment Share on other sites More sharing options...
BUILDER Posted February 20, 2014 Report Share Posted February 20, 2014 You have the idle working now. A good place to start with the air screws is 1 1/2 to 2 turns out. Turn the air screws all the way and back them both out the same number of turns. Not the screws you set the idle with. Talking about the air mixture screws now. Quote Link to comment Share on other sites More sharing options...
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