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How does this Happen?


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#1 farmerall OFFLINE  

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Posted February 01, 2015 - 01:14 PM

I was working on a gt and needed another carb, so I pulled one off the shelf. First thing I always do is pull the bowl off to check the condition. Well I pulled the bowl off of this carb and found this. I've never seen something corrode like this and have no clue how it happens. Also the rest of the internal parts in the carb were fairly clean and there wasn't any evidence that gas sat in it for a long period of time. Does anyone have an idea what would cause this?

Attached Thumbnails

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#2 MH81 ONLINE  

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Posted February 01, 2015 - 01:20 PM

Wow, that screams "additives" LOL
Probably ethanol, but who knows. You may be able to track it with the color of the corrosion.
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#3 Bolens 1000 ONLINE  

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Posted February 01, 2015 - 01:23 PM

I have seen many heavily corrode but never in those colors!

Probably some bad ethanol gas mixed with water


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#4 boyscout862 ONLINE  

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Posted February 01, 2015 - 01:23 PM

It looks like there was water in the bowl for awhile. That is common with the gas now days. What did the bowl itself look like? I've been able to carefully clean many floats. This is one of the reasons that I put Marvel Mystery Oil in my gas. I don't seem to have fuel system corrosion problems when I use it. Good Luck, Rick.


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#5 farmerall OFFLINE  

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Posted February 01, 2015 - 01:26 PM

The bowl was fairly clean. Only a small spot of dirt where the stuff on the float was touching the bowl. There was nothing to indicate that gas or water sat in this carb for an extended period of time after it was pulled off the engine. I should also add that it has been about 6 years since the engine this carb came from ran last. That could possibly rule out ethanol as a cause.


Edited by farmerall, February 01, 2015 - 01:27 PM.

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#6 MH81 ONLINE  

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Posted February 01, 2015 - 01:29 PM

I wonder if that stuff was inside the float (we've all had them leak and eventually sink) and it slowly corroded its way out.
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#7 Freddie1911 OFFLINE  

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Posted February 01, 2015 - 02:17 PM

The rifle barrel bore cleaner I think is ethanol based, gives that color as you swab the bore. just my thoughts. Freddie
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#8 rustyoldjunk OFFLINE  

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Posted February 01, 2015 - 02:37 PM

I wonder if that stuff was inside the float (we've all had them leak and eventually sink) and it slowly corroded its way out.

I was having the same thoughts MH. It's cool looking Farmerall,kinda like modern art. :poke: :smilewink:


Edited by rustyoldjunk, February 01, 2015 - 02:41 PM.

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#9 HDWildBill ONLINE  

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Posted February 01, 2015 - 02:49 PM

I believe moisture got in there while it was sitting on the shelf and caused a reaction on the copper.  Check out these images

 

copper corrision2.jpeg

 

copper corroision1.jpeg

 

Very similar to what you see on your float. 

 


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#10 Cat385B ONLINE  

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Posted February 01, 2015 - 03:01 PM

I agree with the others, it's just water. Green is oxidization, the blue is full blown corrosion. The float will be thinner under the bluest parts.
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#11 superaben OFFLINE  

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Posted February 01, 2015 - 04:59 PM

I agree with the others, it's just water. Green is oxidization, the blue is full blown corrosion. The float will be thinner under the bluest parts.

 

I think it is something else (I don't know what, but something else) because Cat cannot be right today.

 

Ben W.


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#12 LilysDad ONLINE  

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Posted February 01, 2015 - 06:07 PM

It might be viral or bacterial. Be sure to use protective equipment.
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#13 Canawler OFFLINE  

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Posted February 01, 2015 - 10:36 PM

I'll give you a dollar if you eat it.

#14 cpg OFFLINE  

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Posted February 02, 2015 - 12:34 PM

You should submit it to a lab; looks like you may have discovered a new life form.



#15 FilledTires OFFLINE  

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Posted February 02, 2015 - 04:34 PM

Wow that is quite a color! Almost looks like it belongs in a beach house as decoration!






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