Posted by GregCO on August 12, 2014 at 18:40:16 from (69.35.184.186):
In Reply to: E15 experiment posted by George Marsh on August 12, 2014 at 07:19:53:
I have a 25 hp kohler in a garden tractor and that thing will foul plugs and diesel and then bend push rods when I shut it off as well if I don't run high octane fuel in it. Pain in the rear for sure. You are right, those little Nikki carbs don't have an adjustable main metering jet and they seem to be a little rich all the time. Adding a little E85 to bump up the octane and lean out the mix seems to work for me as well. So far the plugs stay cleaner and no dieseling and I don't have to change push rods anymore. I add E85 at about 20%. seems to do the trick. If I was smart enough to figure out the right jet size I would just run straight E85 and be done with mixing fuel.
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