[Farmall] F-20 runs

[Bob Currie]

>************
>First of all, a ton of rust and carbon came blowing out of the stack and 
>raining down on me; more than I've ever seen before.  The good news was 
>that it hadn't had time to get hot.  I hate those showers of hot 
>cinders!**************

Karl,
Not being able to hear or see what is happening there with that F-20, I'd 
say the above paragraph describes most of the problem. I'm thinking this ol 
girl needs to run for about an hour or so. It needs to get good and hot, 
and work all that crud out of the cylinders, around the valve seats, and 
rings and so forth. Putting it under a good load after it's warmed up for 
15 minutes will help that process. Maybe pull  about 5k of dead weight down 
to the pavement and back.  That should get it up to a good working 
temperature, and burn out all them boogers.

bobcurrie

>The second problem was that the engine runs like dog doo.  Despite my best 
>fiddling with the mixture and ignition advance, it ran mostly on two 
>cylinders.  If I backed off the throttle and then opened it wide, it would 
>run on all four for an instant, while the engine caught back up to the 
>governor.  Then it would drop back to two cylinders.  The governor is also 
>pretty unstable, I think.