Carb prob?

[Handyman]

Hey people, I'm new to the site and have done a search on my problem I have on my 99 Banshee. I just bought my banshee yesterday with the problem it has. Here are the mods(that I know of): Pro Circuit full exaust, K&N Filters with no air box, Here is the problem. it starts within 5 kicks(on first start of the day) and idles perfectly, no spitting/sputtering or nothing but when I try to accelerate(in neutral) it bogs down and tried to die. I have isolated the problem to the right carb. I ran it for about an hour and the longer it roan the better it sounded and I was able to apply a little more throttle. If I ease on the throttle the revs come up until about 1/4-1/2 throttle and then it bogs down. If I try to go from 0-full throttle it will bog down. The left carb sounds fine. When I put my hand behind the exaust the right seems to be weaker than the left. I have known the bike with the current set up and mods for a while and it ran like a champ. The bike has been ran once in the past 8 months. I took the right carb apart and claned it the best I could. I was unable to get the float off because I couldn't figure out how to remove the float pin and I was unable to get to the needle under it. I have read the book and it keeps repeating something about the Pilot Needle/Pilot valve. I was at the track the last time the bike was ridden and there was no problems and since then it hasn't been ridden. This is the second time that this has happened and the guy everything apart and cleaned and put everything back together and he can't tell me what he did to fix it. Any help from any of you would be greatly appreciated since my room mate says his 01 660 will eat my banshee alive so yeah I'm itching to prove him wrong. Please help me out

[wesw]

im taking it your using stock carbs.

 

first you need to pull both off and clean them out. spray carb cleaner down the mains( brass hex thing on the bottom) and all over. lift the slides up also and clean them.

 

next you need to find out what pilot, what needle, what clip its on, what main the bike has. this it beyond important to deal with.

 

with the needle sharp end pointed down, the top clip is the 5th and does downward to the first.

 

 

location, elevation is also needed

 

does your bike start with out the choke after sitting a day or so, if it does your pilot is too big. that could cause your bogging plus your needle clip

 

thousand variables

 

my guess would be. stock 25 pilot, if you have stock needle 4th clip, 300 mains depending on where your elevation is

Edited June 4, 2005 by wesw

[Handyman]

The bike needs to be choked at teh first detent and after about 3 kicks it starts. The needles and stuff I believe are all stock. He had to do to minor adjustments with the carbs when he put the exaust and filters on but I nelieve they all stock. The old owner on is his way over to Iraq with the Navy on an Aircraft carrier so trying to fiqure out what he did takes time with the email. Elevation is 300-400 feet above sea level. He emailed me and said that he thinks the gas is really dirt and to change it all out and clean the carbs. He did this the last time and it cured the problem and he thinks there is residual dirt floating around. He got gas from a gas station where a dozen or so cars broke down due to extremely dirty gas.

[wesw]

well thats not good.

 

drain your gas tank, and clean your carbs up really well.

 

go to a part store adn get you a in line fuel filter. damn good insurance against your motor going to hell cause of crap in the gas

[Handyman]

Yeah I changed the gas and pulled the petcock and found the reserve filter had a hole in, just big enough to let dirt and crap through. The Bike ran a hell of a lot better but it still bogs. Not usre if the pilot needles are not adjusted right. When I pulled the main and pilot jets out I found a 2.8 and a 25 size jets. Can't tell you which number was on which jet.

[Banshee~]

do you think it was a 280 main and a 25 pilot? Your main jet should be about 340.

[Handyman]

do you think it was a 280 main and a 25 pilot? Your main jet should be about 340.

377779[/snapback]

 

I have no idea....I pulled the left carb because it sounds like the bike is choking itself out in the left carb when I give it gas. I cleaned it just like I did the right and now the b**ch won't start. It started after I put the left carb on and it ran but it slowly died and now it won't start. I'm about to pull both carbs and clean them AGAIN and match all the jets and maybe by the grace of god the problem goes away. I will let you know the size of the jets. I'm starting to regret buying the damn thing. If I don't get it fixed by next weekend it's going to the shop.

[Handyman]

do you think it was a 280 main and a 25 pilot? Your main jet should be about 340.

377779[/snapback]

 

Pulled both carbs and here are the jet sizes

Main: 290

Pilot: 25

Edited June 5, 2005 by Handyman

[justinklumb29]

i would try going down on the jet to maybe a 270. also there is a little tube(its called a choke tube) that connects between the carbs and it will not run well at all if you do not have it in there. check to make sure you had that tube in.

[Handyman]

i would try going down on the jet to maybe a 270. also there is a little tube(its called a choke tube) that connects between the carbs and it will not run well at all if you do not have it in there. check to make sure you had that tube in.

377893[/snapback]

 

 

Yeah the tube was there. I always made sure it was there. I pulled the plugs and they were black as hell. put new plugs in after I gapped them and I'm running a 20:1 mix with 91 octane. I pulled the carbs off and cleaned the shit out of them now each carb has been cleaned 3 times each. I put the carbs back on and she fired on the 3rd kick with choke applied at first detent. I am now wondering if the choke has something to do with it. I did find a O-ring on the fuel valve that was scrapped on something and has a small flat spot. I switched it to the other carb and doesn't seem to be causing any probs but I will still get one tomorow if I can. The carbs are syncronized. The TORS are matched, I wonder if I need to get a new fuel valve sinc ethe book says that any damage to the o-ring or fuel valve will cause it to run rich and it almost seems like it's running rich. whe nI hit the throttle real quick it wants to bog down but if I ease on it it will rev up until about 1/8 throttle and then bogs down again. I am running out of ideas and need some serious help on this thing. HELP ME PLEASE.

[justinklumb29]

20:1 is really rich and could be why it is bogging, try running 32:1. i ran 24:1 in mine once and it was a bit boggy

[Handyman]

20:1 is really rich and could be why it is bogging, try running 32:1. i ran 24:1 in mine once and it was a bit boggy

377899[/snapback]

20:1 is too rich?? I did a 20:1 mix in 2gal. Can the reed valves be causing the problem?? I never thought of that until a buddy of mine told me to check those.

 

It originally had a 32:1 mix in it and after I changed the mix as per manufacture specs to 20:1.

Edited June 5, 2005 by Handyman

[hamuel]

GO by what the oil recommends. Hell i mix at 80:1

[hamuel]

Forgotto add have yah synced the carbs since yah took them apart??? what about the air screw?? is it all the way seated or out a ways???

[Handyman]

Forgotto add have yah synced the carbs since yah took them apart??? what about the air screw?? is it all the way seated  or out a ways???

377917[/snapback]

 

Carbs are synced and the air screws are are out 2 turns as per book specs.