Posted by Michael Schwartz on February 23, 2011 at 12:51:19 from (76.77.196.79):
I have a 460 Farmall that I use to blow snow with. It runs perfect untill I use it for 15 minutes and the throttle starts speeding up by itself. The longer I use it the worse it gets. It almost gets the RPM's so high I'm worried about blowing the engine. I have to throttle back to idle and the engine then gradually slows down. I have a new heat riser spring on the manifold and it appears to be workig correctly. The carburator turns all white from frost so I suspect it might be sticking somewhere. The govenor appears to be working right. I covered the carb and guvenor with a piece of cardboard thinking maybe it was the snow mist freezing something up but that didn't help. I would appreciate any ideas as I sure don't want to blow the engine as in warm weather it runs perfect. Thanks
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