[Farmall] Farmall Model H - Cuts out after 45 min to an hour

[David Bruce]

I had a similar problem with my JD 2010 diesel.  It would run for about 
20 minutes and then stop like it was starved for fuel.  Checked the fuel 
level in the tank the first time, then the fuel filters - all clean.  
Finally I took the fuel tank off and looked inside with a flashlight.  
The tank surface was clean but there was a small ball of gunk that would 
settle over the outlet connection thus blocking the fuel flow.  After 
getting the gunk out of the tank, it now runs just fine.
David
NW NC


Mike Sloane wrote:

> Since it takes almost an hour for the engine to quit, you can pretty 
> well eliminate the carburetor as a source of trouble - if the carb was 
> the problem, it would likely not run at all or very poorly.
>
> I did have a similar problem with my Super M, and it turned out to be 
> the little metal cap from the end of a gas can spout that was floating 
> around in the tank. The tractor would run fine and then mysteriously 
> quit when the cap found itself over the tank outlet. It drove me nuts, 
> but I finally found it with the help of a very bright flashlight.
>
> I am not as knowledgeable about magneto ignitions as I am with 
> electric ignition systems, but you might want to look very carefully 
> for any wires inside the distributor and coil housing that might be 
> touching, especially ones that are very close to touching and could 
> short out when hot and expanding. But if the behavior before and after 
> the magneto change is exactly the same, that is an amazing 
> coincidence. :-) I will agree with Steve, however, that everything 
> points towards a bad coil.
>
> If it was an electric ignition system that was converted to 12 volts 
> from 6 volts, my guess would be the lack of or too small a ballast 
> resistor in line with the coil, causing it to overheat.
>
> Mike
>
>