I have been trying for several days to trouble shoot my engine problem. I have a 1996 70 johnson. It will only run when the high speed idle arm is up. It also sounds as if it is not running on all cylinders. I rebuilt the carbs recently, rechecked the floats, and replaced all the old gas lines.
I did a spark check, and noticed a second spark coming out from under the wire on the lowest plug. I also noticed this plug letting off smoke when the engine is running. In addition, I bought new spark plugs, and this plug is already fowled. Any thoughts, ideas or suggestions?
I did a spark check, and noticed a second spark coming out from under the wire on the lowest plug. I also noticed this plug letting off smoke when the engine is running. In addition, I bought new spark plugs, and this plug is already fowled. Any thoughts, ideas or suggestions?