[AT] oil change

[Larry D Goss]

Question of the day -- does carburetor icing occur on fuel injected engines? 
:-)

The fact that temperature changes with rapid changes in pressure is 
fundamental to the manufacture of liquid oxygen, liquid nitrogen, and the 
operation of most refrigeration and air-conditioning systems.  When we lived 
in the Kanawha valley of West Virginia, there was a liquid oxygen plant 
located three or four miles from where we lived.  The big compressors were 
always running when we drove by in the morning.  You could hear them nearly 
a mile away.  The first product to fall out of air (after the particulates) 
is water.  Oxygen comes after that, and then you're left with just nitrogen.

Larry

----- Original Message ----- 
From: "Ralph Goff" <alfg at sasktel.net>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Friday, December 07, 2007 10:53 AM
Subject: Re: [AT] oil change


>
> ----- Original Message ----- 
> From: <JTakemoto at wildblue.net>
> To: "Antique tractor email discussion group" 
> <at at lists.antique-tractor.com>
> Sent: Friday, December 07, 2007 1:12 AM
> Subject: Re: [AT] oil change
>
>
>>
>> Funny wind chill can cause ice in a Carburetor on a fairly warm morning 
>> 40
>> to 45 deg.
>> J.
> Actually it is the humidity (moisture) in the air that causes carburetor 
> or
> intake icing. That moisture-laden air rushing through the carb and intake
> will turn to ice until the engine heats up enough to melt it. Surprisingly
> we can have just as severe carb icing problems at 40 above as at 30 below 
> as
> it is usually very low humidity conditions at -30. A cool summer morning 
> at
> even 60 degrees can still cause ice buildup on the intake manifold of 
> older
> tractors (and my IH truck) when the humidity is high. I've seen it happen
> many times. The easy cure? Just shut off the engine for a few minutes to 
> let
> the heat from the engine warm the manifold enough to melt the ice. After
> that it is good for the rest of the day. Thats the reason the newer (70s 
> and
> up) engines had a hot air "stove" on the exhaust manifold to warm the
> incoming air and prevent this icing problem. Vehicles anyway. I've never
> owned a gas powered tractor new enough to have a "stove"
>
> Ralph in Sask.
>
>
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