New Banshee, Got a Problem

[Mat Holland]

Ok, so I got a 2000 banshee. When I got it, it was all stock. I bought pipes for it, and jetted it, and i had a little bit of problems, but i got it. So I started at my girlfriends house, and went to a place around here called suicide. Theres some decent size hills there to climb. I was following a jeep and going into the woods, i was going really slow, just keeping it reved up to keep from fouling a plug. We got to the hills, and i climbed one, got to the top of the hill and bottomed out. So i messed around a little bit, then shut it off. I heard bubbling, so I took my seat cover off, and it was my antifreeze. It was so hot, when I stuck my finger in it, it burned it. So I let it cool off, didn't start it for about 20 mins. I EASED out of suicide, and got on a gravel road and rode back to my girlfriends house just cruising in 6th gear. I got to my GFs house and i checked the antifreeze, and it was cool. So I figured I was just not going fast enough to cool the radiator off. I went gravel cruising for bout 10 minutes and put it up. So tonight me and my girfriend was going to go ride. I went ahead and swapped my plugs out and it took me forever to start it. Once I got it started i warmed it up a little and started to take off and it died. I finally got it started again, and i got to take off, went down the road a little ways it wasnt running right. It wanted to cut out, and when i stop it dies. So whats going on? Need to rebuild top end or what do you guys think it may be?

[Paddleboy]

you might be too rich if it fouls out and that will make it hot. but it could have been that you were going slow also. but for sure your shee shouldnt foul out at low rpm if jetting right.

[Bansh-eman]

what jetting is in the bike? IS EVERYTHING bone stock? You wouldnt happen to still have thos plugs that you took out so you can snap a pict would u?

[Mat Holland]

well, i was always told that on a 2 stroker you gotta keep it reved up to keep them from fouling plugs. Yes it is bone stock other than the snorkle being taken off, and the exhaust. I am running 260 jets, I can give you guys a pic of the plugs tomorrow, the circle is black, but the 2 little places where the spark happens like the lever thing and the point are a golden brown. but still why would it have been running decent, and all of a suddon since last night it doesn't want to run at all? It did seem like my jetting could be wrong because its not been right since I changed the exhaust and jets.

[Mat Holland]

Also, what about my mixture screws, how do you adjust those, is there an easy way? I have been just guessing and checking. I have been trying to get it right, because from right out of idle, to midway, it doesn't get up like it used to, like there is some cutting out. What jets do I need to change? Are my mains not high enough? But still, why doesn't it want to run right now when it was running decent for a couple of days?

[Mat Holland]

Heres a picture of my spark plug.

 

Thanks!

[Paddleboy]

Heres a picture of my spark plug.

 

Thanks!

 

wow i hope that is an old plug.. otherwise you are real rich

[quikshee]

Looks like your runnin pretty rich, the air screws you just screw in or out. In your case I would suggest turning them out 1-1.5 turns and see if it helps

[Mat Holland]

ok rich is what? Too much fuel, or not enough? That plug had like 2 hours riding time on it. Do I need to jet it more or less or what? My pilot jet is stock, mains are 260's. What do I need to do?

[Mat Holland]

ive tried messing with my airscrews, with no luck. Does that mean I need to go down a main jet size or what? But since it was running rich, and got really hot, and the antifreeze started bubbling, and i let it cool down a little, then rode it down the road and it cooled off, and rode it a little bit later, do you think I will need to rebuild my top end, because it doesnt even want to run right now, and it was. Let me know if you think I need a smaller main jet or whatever. Only thing that I did was put my exhaust on and change the mains thats the only thing i did.

I took a audio record of me kicking it, and it running, at the end of it is when i let off the gas, and it died.

0824081557.wav

Edited August 25, 2008 by Mat Holland

[quikshee]

Yes, rich is to much fuel. Since you werent running at WOT the mains don't come into play, try turning the air screws out some. Make sure you turn them both out the same amount

[Mat Holland]

read the above post again, i have edited it some. Well, if its not the mains, then could it be the pilot jets? im just confused...the adjusting the airscrews havent been helping too much.

[quikshee]

ive tried messing with my airscrews, with no luck. Does that mean I need to go down a main jet size or what? But since it was running rich, and got really hot, and the antifreeze started bubbling, and i let it cool down a little, then rode it down the road and it cooled off, and rode it a little bit later, do you think I will need to rebuild my top end, because it doesnt even want to run right now, and it was. Let me know if you think I need a smaller main jet or whatever. Only thing that I did was put my exhaust on and change the mains thats the only thing i did.

 

You'll have to find a known working compression tester and check both cylinders, if your under 100 psi your lookin at a top end rebuild :sad: Was there a bog at any part of the throttle???

[magz]

leave youre jetting alone for now.........

 

 

check for compression. see if its getting enough compression to run right.

 

 

dont run in 6th gear full throttle for longer then 15-30 seconds. anything over that and your ganna get snafu'd

if your going to be running at any speed for any amount of time keep it at half throttle.

 

make sure your filter is clean, not over oiled if its a K&N.

 

if thats all good take the carbs off and clean them good...spend 20 minute cleaning on each. make them shiny. then get back with us so we can rule those things out.

[Mat Holland]

alright, ill ask around and try to get a compression tester tomorrow. How exactly do you use one of them anyway? Like i said it was running fine, until the other night, i cleaned the plugs, and put them back in and it doesnt want to stay running, why would it have quit running all of a suddon?