[AT] oil change

[Gene Waugh Elgin, Illinois USA]

I had an old Datsun wagon at one time that would suffer from carb icing 
under the right conditions.  I had the worst problems under not-so-cold 
conditions, foggy, at moderate altitude (5000 - 6000 feet), working 
fairly hard (going UP the mountain).  It got to where I could easily 
anticipate when the problem would appear, so as to give me time to get 
on a pull-out and let her warm up for a bit; then, all was well.  And 
this was in Arizona, which we think of as dry.  Well, it was dry, but 
the fog was 100% humidity.

Gene Waugh
Elgin, Illinois USA

Ralph Goff wrote:
> ----- Original Message ----- 
> From: "Dudley Rupert" <drupert at premier1.net>
> To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
> Sent: Saturday, December 08, 2007 1:36 AM
> Subject: Re: [AT] oil change
> Ralph,
>   
>> I just wanted to make sure I understand what you're saying above.  When 
>> you
>> say you get frost on the outside of the intake manifold on a high humidity
>> morning do you mean after you've run the tractor for a bit first?
>>     
>
> Thats right Dudley. After a few minutes of idling after a cold start up the 
> frost will appear on the outside of the manifold. Right above the carburetor 
> flange. This will be accompanied by a gradual slowing down of the engine. 
> Black smoke will begin to appear at the exhaust and the engine will in some 
> cases stall out just as if the choke is on. As I mentioned before, the cure 
> is to shut down and let the heat from the engine warm the manifold and melt 
> the ice. After that it is usually fine for the rest of the day.
>
> Ralph in Sask. 
>
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