hi guys , have a 1966 18 hp evinrude , seems not to run to bad butt has a bad cough at low speed , but new carb kit in it , checked plugs when got home , top plug was very black , bottom was clean , any ideas
Sounds like it is running on 1 cylinder.----Help yourself and post compression numbers.----See if spark jumps a gap of 1/4" or more on a simple test device.----Check fuel pump diaphragm,----Check thermostat as they are often missing or stuck open.----Open low speed mixture needle to get rid of lean sneeze.
