Carb questions for the pros! Please help!

[slimeball]

Ok, I just bought a banshee with vforce reeds, fmf pipes and headers, and a open airbox with a k&N filter. The bike has some problems with the carbs though. When the carbs are cold or when the slightest bit of water gets in the carbs the bike races violently and the problem is getting worse and worse. the other day my radiator sprung a leak. I replaced the radiator. Don't know if that has anything to do with the carbs but thought I would mention.

 

My question:, I don't really want to buy new carbs because I am low on cash. What I was thinking was to buy a carb rebuild kit. The rebuild kit comes with needles. Will I have to buy an aditional jet kit on top of the carbs rebuild kit or does the kit come with the needlses that will replace the jet kit? What the hell do I do? I need help. Do I have to buy new carbs or can mine be fixed for less money?

[Banshee~]

Did you rejet for your mods? What is your elevation and air temp. ? I think your slides might be sticking. When you say open airbox, do you mean you have the airbox lid off?

[slimeball]

I bought the quad the way it is jetted for the parts it already has. I don't know the setttings are. I haven't looked yet. I think the slides are sticking to. The carbs are really mucked up. The bike needs some work. What's the deal with the jet kit? Do I have to get a specific kit or will any kit work but needs to be set to a specific placement?

[Banchetta]

Its a common problem w/ the stock carbs. New or used....there are some 20+page threads on here about this w/ theorys on why only stock carbs do this....so far they are still theorys.......only way to stop it is to either avoid water at high speeds or get new pwk carbs (keihins)

[slimeball]

Yea, I ean I have an open airbox.

[slimeball]

How much do those go for and if I go with those what other mods do I have to do to use them?

[banshee tuner]

Try cleaning the carb slides first, if that does not work I would put my money into new carbs. As far as the radiator, just get used to working on the bike and spending money on it. Most people sale their bike because they get tired of spending money on them.

[Banshee~]

So you just have the airbox lid off? Go buy a cylmers manual on the banshee off amazon,overstock.com, or your yamaha dealer. Then get the carb rebuild kit and follow what the clymers manual says to do. What the deal is on the slides, is that they will stick if you get a couple of grains of dirt on them. So when you have it apart clean the shit out of the slides and inside the carb cap. Then spray some WD-40 on the slide, to prevent sticking. Also, while you have it apart, check to see what size pilot and main jets you have in it.

[Banchetta]

How much do those go for and if I go with those what other mods do I have to do to use them?

448405[/snapback]

A pair of carbs are around 300 bucks depending on size and condition...I'd watch ebay for a pair...don't get too large of a carb. You can hurt performance as well as gain...

[Wallrat]

Whenever you buy a used bike, first thing you should do is take apart and rebuild the carbs. Whenever you leave the bike sitting for awhile the fuel/oil starts to gum up inside the carbs. At best this is going to cause some sticking, at worst it'll plug up a jet and cause a lean condition that could lead to a blown engine. This is true for EVERY CARB out there, not just stock. Get a clymers and some carb cleaner and start pulling apart the carbs. Hose down everything really well. I often use a whole can of cleaner for each carb when they're really gooey. Its an easy job and something you'll be doing alot of in the life of the shee. As far as water goes, there really doesn't seem to be a fix for this aside from avoiding puddles.

[slimeball]

Yea, There are soem carbs on ebay at a good price but I will try cleaning them first. I will post pics because they look f__ed. If that doesn't work I will just buy new ones

[Banshee~]

As far as water goes, there really doesn't seem to be a fix for this aside from avoiding puddles.

448805[/snapback]

I played submarine one time when I still had my airbox and the throttle dident stick. I guess its just some stock carbs that that happens to. If theres alot of green shit in the bowls you need to get all of that out. BTW dont touch the floats because they bend easy and then you will have to reset them.

 

[slimeball]

Ok, I just bought 2 carb rebuild kits and a new plunger kit because mine was shot and I will be taking pics this weekend if the plunger kit comes in the mail. Should be interesting because I have no idea what I am doing. I will be jumping in with just a hundred year old manual.

[slimeball]

Ok, i am working on rebuilding my carbs and I have to say that I am a little bit lost. Is it ok to keep my old jets? I will post some pics a little later after I finish the first carb. they seem to be in tact. There isn't a lot of gumming up inside that i can see. the carbs on my bike are mikuni? Are those stock?

[odaen]

yes, keep your old jets. yes the stock carbs are mikuni. make sure you hose out the pilot and main jets with some carb cleaner before you put them back in. douche the entire carb with some cleaner.