Re: 1959 elgin 12hp misfire

[jerry-ahrens]

I believe that carb has an air metering low speed circuit if I’m not mistaken. Of course the adjustment is backwards from say a Johnson or Evinrude carburetor. As Frank pointed out, the dip tube that extends down in to the bowl can easily be plugged up. If your’e careful, you can use a torch tip cleaning wire to push out any debris. Be careful, and don’t break it off in there.. I like to use some Quicksilver Power Tune, or some BRP Engine tuner to soak the carb in, followed by a rinsing with regular carb cleaner. Finish with some compressed air to blow out all passages.