Posted by Eric Bergstrom on July 04, 2009 at 15:25:47 from (98.240.239.156):
After the impressive number of responses given to the gentleman who asked about his Super A, I'd like to see if my problem could be solved as well.
I have a 1949 McCormick W4. It will run well all day long in any gear. However, after plowing or pulling hard for a half hour to an hour, it will eventually start to miss gradually more until it dies. Then, when you go to start it, it turns over a mile a minute, as though the valves are stuck open.
I doubt it's short on gas since it floods instantly when starting (can't find a quality needle and seat anywhere).
We adjusted the valves to .017 and it began to start much easier (it used to be stubborn) but it still acted up. We then adjusted them again, increasing the gaps. Now it starts hard again and still does the same thing when hot.
I can't confirm if it's overheating or not, since the new IH Rochester guage never reads anywhere near "Hot."
I know there are probably plenty of possibilities, but what would you do in this situation?
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