re jet banshee is revving high on its own

[guy with a broke quad]

so i just re jetted to a 270 from 200 because was bogging out when throttle was near fully open but now its just revving really fucking high has soon has i start it up i have to cut it out instantly

[BeeCanBanshee]

Check reeds. Mine did that and I had a broken reed.... Replaced it and it stop revving to redline apon start up. Hope this helps.

[guy with a broke quad]

i have pro circuit front pipes fmf back pipes and cfm air box encase that matters my elevation 96.886 m / 317.869 feet premature temp 4-6 degrees

Edited November 18, 2012 by guy with a broke quad

[guy with a broke quad]

Check reeds. Mine did that and I had a broken reed.... Replaced it and it stop revving to redline apon start up. Hope this helps.

happend when u changed jet?

[#1JUANstunna]

Tors or deleted? If deleted make sure your cable is all the way down in the holder and its adjusted correctly. Are the slides in the correct way with the cut out in the rear?

 

Are you sure you just don't have the idle turned up too high? You should think about syncing the carbs while you're at it too

[guy with a broke quad]

Tors or deleted? If deleted make sure your cable is all the way down in the holder and its adjusted correctly. Are the slides in the correct way with the cut out in the rear?

 

Are you sure you just don't have the idle turned up too high? You should think about syncing the carbs while you're at it too

no tor boxes and got no idle screws still need to get them slides are in correct way round sorry about blury pic http://imageshack.us/a/img577/3706/032kqj.jpg

[guy with a broke quad]

also i just felt both front and back pipes the right ones seem hotter then the left the left just seem cold idk if that matters

[#1JUANstunna]

If it was me I'd pull the carbs, clean and inspect them. Bump the pilots to 27.5. Install the idle screws. Reassemble and adjust to factory specs. And start from there. Making sure the cable is properly routed, adjusted and slides are seated.

 

Are you trying this with the air box in place or not

[guy with a broke quad]

If it was me I'd pull the carbs, clean and inspect them. Bump the pilots to 27.5. Install the idle screws. Reassemble and adjust to factory specs. And start from there. Making sure the cable is properly routed, adjusted and slides are seated.

 

Are you trying this with the air box in place or not

yep with air box on

[#1JUANstunna]

Carbs are probably probably out of sync too

[guy with a broke quad]

Carbs are probably probably out of sync too

when the 200 main jets was on it did not do this but then ak told me that should not matter carbs both lift at same time

[guy with a broke quad]

Carbs are probably probably out of sync too

i cant get the idles yet because ill have to get them from america and i have had carbs apart about 20 times today so they should be clean

[AKheathen]

holy crap, if it is really 4-6c, i think that is like under 40f, and 270, is going to be lean. whenever i see pro-circuits, even though they are my favorite pipes, i must impress that you need to do a proper plug chop. in y personal experience, and tons on this site, pro-circuit pipes either go one way or the other. you should be at either 280/90, or at 320/30. anyways, there is 2 reasons that are likely for your revving. first, is an airleak. use startig fluid, or carb cleaner around the carbs and intake/cyl and listen for engine change. next, which is common, is that you are off on the mixture, and the idle is set high to compensate. if this is the case, then you will see after warming it up, and adjusting the fuel screws for the highest idle, and turning the idle back down as you do this. once you heve the highest idle, and idle turned down, turn the airscrews in 1/8 turn and it should be pretty much set, or real close.

[#1JUANstunna]

when the 200 main jets was on it did not do this but then ak told me that should not matter carbs both lift at same time

Appearing to lift at the same time and syncd is two different things. I agreed that you are lean but until you get the idle screws its going to be hard to make the proper assessment of your problems.

[guy with a broke quad]

holy crap, if it is really 4-6c, i think that is like under 40f, and 270, is going to be lean. whenever i see pro-circuits, even though they are my favorite pipes, i must impress that you need to do a proper plug chop. in y personal experience, and tons on this site, pro-circuit pipes either go one way or the other. you should be at either 280/90, or at 320/30. anyways, there is 2 reasons that are likely for your revving. first, is an airleak. use startig fluid, or carb cleaner around the carbs and intake/cyl and listen for engine change. next, which is common, is that you are off on the mixture, and the idle is set high to compensate. if this is the case, then you will see after warming it up, and adjusting the fuel screws for the highest idle, and turning the idle back down as you do this. once you heve the highest idle, and idle turned down, turn the airscrews in 1/8 turn and it should be pretty much set, or real close.

ye its that cold because its half 9 and im in england also it dident do this with 200 main jets i have a pair of 290s i have not tryd would it be worth trying them out? and i do not have idle screws has they was never installed and i need to order then from usa