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Tractor Talk Discussion Forum

updraft carb frosting

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Twofoot

11-29-2004 15:05:16




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My 52 Case Sc has an updraft carb that frosts up and causes the engine to run poorly. Anyone have any suggested fixes.




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Twofoot

12-01-2004 12:16:50




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 Re: updraft carb frosting in reply to Twofoot, 11-29-2004 15:05:16  
Thanks for the help, I'll try some or all of these fix's. I love this board!



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punchie

12-01-2004 05:43:17




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 Cover the rad . in reply to Twofoot, 11-29-2004 15:05:16  
Most old tractor don't have any thing to control the temp. I cover the rad. and when it gets warm uncover just enough to keep her warm just below normal operating temp. I have a few tractors that will do that normal for them in the first few minutes of running, fan blowing the air and gas flowing in the carb , just like on a tire let the air out when it is cold and the water will frost the outside or make ICE BALLS that make it slow and speed up spitting sound.

Have a Good One !!

Teddy

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RZ(WA)

12-01-2004 00:35:50




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 Re: updraft carb frosting in reply to Twofoot, 11-29-2004 15:05:16  
There was a similar quetion posted last year or the year before with quite a few responses. I've searched for it but haven't found it yet, sorry.
As I recall, most of the posts said the icing was due to an air leak in the carb. Probably so, but I've used HEET and some other de-icer stuff (only to absorb what moisture may be in the tank, and not to specificaly address this problem) and haven't had the icing like I used to.

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jason(ma)

11-30-2004 18:39:03




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 Re: updraft carb frosting in reply to Twofoot, 11-29-2004 15:05:16  
our farmall M does that. All we do is shut it off for a few minutes and let the heat from the manifold warm it up. It runs fine after that.



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JHesler

11-30-2004 07:27:28




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 Re: updraft carb frosting in reply to Twofoot, 11-29-2004 15:05:16  
Same thing happens in airplanes. They all have a control called carb heat. It preheats the intake air over the exhaust manifold. Maybe some variation would work for you.



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Bill(Wis)

11-29-2004 20:11:57




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 Re: updraft carb frosting in reply to Twofoot, 11-29-2004 15:05:16  
Try some anti-icing additive in the fuel. I realize that the moisture that is causing your carbureter ice problem is coming from the air, not the fuel, but that may keep ice from forming. We had a big Ford truck that would form carbureter ice and we cured it by using Mobil Super during cold damp weather.



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Ron in AR

11-29-2004 15:25:28




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 Re: updraft carb frosting in reply to Twofoot, 11-29-2004 15:05:16  
Don't know if it will help, but..... A guy I used to work for had an old forklift that used to do the same thing. I don't remember what brand it was, but we solved it by running a copper line off the water pump and then back to the radiator with a couple of coils wrapping around the carb. Insulated the line other than at the carb area with those foam water pipe jackets. Worked like a charm. Hope that helps you.

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old

11-29-2004 15:19:35




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 Re: updraft carb frosting in reply to Twofoot, 11-29-2004 15:05:16  
Thats very common if its humid out, let it run for a few minutes and get warm and it will stop.



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Matt Clarl

11-30-2004 07:20:06




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 Re: updraft carb frosting in reply to old, 11-29-2004 15:19:35  
My 560 never stops forming frost on the carb. I ended up forming a piece of tin to cover it so that the engine heat keeps it frost free. Otherwise, it'll get bad enough (on a 30 degree day) that the whole thing gets iced up and runs horribly.



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Hoosier JD

11-30-2004 16:55:35




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 Re: updraft carb frosting in reply to Matt Clarl, 11-30-2004 07:20:06  
I just add a bottle of "Heet" to each tank of gas during the cold weather. Solved my problem of icing-up in my 4010. Mike



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