[Farmall] Farmall C carb question

[Mike Sloane]

While there could be a problem with the jets and stuff, it is more 
likely that you have a vacuum leak between the carburetor and the intake 
valves. You didn't say why you changed carburetors, but you may have had 
the problem before (warped manifold, pinhole in the casting, bad 
gasket[s], etc.). One way to check for a vacuum leak is to get the 
tractor running at idle and move the nozzle of an unlit but open propane 
torch around the intake area. If the engine sucks in unburned propane, 
the engine speed will speed up momentarily.

Mike

PROFARMALL at aol.com wrote:

>Hi all, 
>I just changed carbs on my 1948 Farmall C  and had a few question, what 
>causes a governer to  seach for a set rpm , like at wide open throttle?  and why 
>does closing the choke half way make the engine run normal? It seems like it 
>needs more fuel. My old carb had a main needle adjustment screw and the 
>replacement carb doesnt, I was told that the old carb was a distillate carb. The main 
>jet in the old carb has 27 stamped on it and replace has a 30 if that helps 
>anything, Any thoughts would be appreciated. Thanks in advance Ed 
>
>
>
>  
>


-- 
Mike Sloane
Allamuchy NJ
Email: (mikesloane at verizon.net)
Website: <http://www.geocities.com/mikesloane>
Blog: <www.mikesloane.blogspot.com
Tractor images: <www.fotki.com/mikesloane>
Work: none - retired

All political parties die at last of swallowing their own lies. -John
Arbuthnot, writer and physician (1667-1735)