I got this motor 7,5 75 2-cyl 3488153 3801457 1973 USA at the end of last season and was just able to take it out and run it a bit. It starts up and runs good but when I try and throttle it up it sounds like it bogs down and does not seem to be getting full power. I pulled the plugs and the bottom one was black and the top one looked new (I know the plugs are the same age and are older I am getting new ones). I tested them and the bottom one puts out a lot more spark then the top. I am wondering if I have a bad ignition coil? Anyone have any ideas where to start? Thanks
Charles
Charles