Carb Nipple

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breaze
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Re: Carb Nipple

Post by breaze »

I wasn't riding at the time - just changing the fuel hose, so I never noticed a lack of power.

Seems like you're over-thinking this one - Bear pointed out it wouldn't suck air into the mix, but certainly it wouldn't perform as well with a loose fuel connection. Makes sense to concentrate on re-attaching the nipple, then you can ride for a while with the plastics off until you determine if the power loss is corrected.

If you've ever worked with solder and flux, and you're comfortable with it, that seems like the best approach. If it fits without the solder and you insert it while the solder is hot, the worst that can happen is it doesn't hold - in which case you are back where you started. If you are not comfortable working with solder and you can get a reasonably tight fit, try the thread sealer - you just need an air tight seal that won't vibrate loose easily.

I really shouldn't give advice (no expert) so take it with a grain of salt.

One other thought - make sure you work in a chilly environment so that the nipple stays erect throughout re-attacment. :lol:
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speedy25
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Re: Carb Nipple

Post by speedy25 »

I have encountered the OP's problem before. In my cases the fit was still semi tight and I made the repair as another poster suggested with loctite.

Since it sounds like the fit is far looser than a loctite repair would handle, yes the solder idea has merit. HOWEVER.... I would be careful doing this. While the solder is soft you could still damage the carb body. It is correct that the solder will NOT stick to the carb casting. You cannot solder to aluminum. A propane torch would be ideal to make an even coating. If you get too much on solder is easily trimmed with a utility blade. If you can see where you trimmed it a LITTLE bit of flux and some more heat will make an even coating. A light tap with a small hammer should be enough to seat it into the carb body.

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Re: Carb Nipple

Post by SpreeGuy 123 »

Oh I have no doubt that I am over thinking this one. What else would I be thinking about though if I didn't.. :? Anyways I don't expect it to be any better, just getting my hopes up that's all. The nipple however is actually not that loose, its got a snug fit and has only ever come out i think twice over 2k miles (maybe once cant remember).

I think Ill try the loctite option first and see how that patch job goes.

Ill let you guys know how it goes...
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breaze
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Re: Carb Nipple

Post by breaze »

I hear ya, I think I'm the king of over-thinking. Maybe that's why it's so addictive, keeps your brain busy and your mind off paying the bills.

Course, anything more than a primal urge is taxing my brain-power.

Good luck, conquer the nipple problem and if the power loss is still occurring, these guys will help you figure it out next.
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SpreeGuy 123
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Re: Carb Nipple

Post by SpreeGuy 123 »

I probably over exaggerated the power loss. It's not like the scooter runs like a pile, it's just that when going up a VERY steep hill there is a "noticeable" difference in power, but the power is still there to get up the hill. Of course when running on anything relatively flat it runs just fine.

P.S. As I was over thinking this problem today I decided I would just give the nipple a nice little tap with a hammer to seat it in there nice and tight and see how that does before I go adding adhesives in the carb.
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Re: Carb Nipple

Post by motormike »

You have no sluggish problem being caused by a fuel nipple....VERY steep hills ARE going to slow any small cc vehicle, the heavier the load, the more dramatic the effect on the ascent...... :hi:
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