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Post by bigmac on Apr 15, 2013 20:47:26 GMT -5
There was some sort of crusty, yellowish stuff around my carburetor's gasket when I first opened it for a cleaning. Looked like some sort of glue, though it didn't hold the carburetor shut. A lot of it came off when exposed to carburetor cleaning fluid.
However, since putting it back together, I've noticed a yellowish stain that keeps forming around the edges of the carburetor. Luckily, It wipes off easily. I thought it was leaking gas, but now I think it's that stuff I saw around the gasket. It seems to only bleed out a yellowish stain after getting wet.
Has anyone else experienced this, or know what this stuff is? I wonder if the factory put some kind of adhesive on it so if the gasket didn't work, the glue would help seal it.
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Post by jeffery5568 on Apr 15, 2013 21:34:49 GMT -5
Its pollen.
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Post by domindart on Apr 15, 2013 21:43:09 GMT -5
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Post by rockynv on Apr 15, 2013 23:12:27 GMT -5
Could be pollen. If so is your air box cracked so that it is getting past the air filter? Some zinc chromate alloys have also been know to form yellow corrosion if they become damp especially on vehicles where the engine to frame grounds are faulty.
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Post by Moat on Apr 15, 2013 23:14:15 GMT -5
I'd have to guess that it's just a bit of varnish residue left behind as fuel evaporates from around a slightly weepy float bowl seal. A very tiny bit of fuel-proof gasket sealant (Permatex Form a Gasket #2?) smeared on the seal would probably take care of it, if so.
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Post by bigmac on Apr 16, 2013 23:10:04 GMT -5
I looked at it today. The air box is crack free and so is the hose that runs to the carburetor. Last week I was getting it cleaned up (it was very dirty from winter riding) and wiped most of it off. Not much is visible at this time, but I took this picture anyways. You can see some yellowish color near the area that's being overlapped by the green wire.  |
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Post by Moat on Apr 17, 2013 0:14:34 GMT -5
Yeah, just a little dried fuel varnish residue, looks like. Nothin' worth worrying about unless it becomes a messy nuisance - in which case you could seal it up as I mentioned above. Pretty much all carburetors (bikes, cars, boats, etc...) will start to weep a little, eventually!
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Post by bigmac on Apr 17, 2013 0:55:06 GMT -5
Okay. If it gets bad, I'll put a little sealant on the gasket next time I need to open it up.
Thanks rockynv, and Moat for the help, and jeffery for the joke.
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Post by gy6girl on Apr 17, 2013 3:05:31 GMT -5
Is it coming from the fuel pan seal, fuel hose, or from the air intake above it?
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Post by domindart on Apr 17, 2013 3:23:02 GMT -5
I have the same thing growing on my big toe on right foot...  ;D |
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Post by bigmac on Apr 17, 2013 19:03:21 GMT -5
Is it coming from the fuel pan seal, fuel hose, or from the air intake above it? Mostly from the fuel pan seal, though stains also come from higher up, around the air intake, but not very much. |
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