1989 evinrude 150 starts fine but ar idle pops 10- 20 seconds and at an increse in throttle pops and misses but more throttle maybe at half and full speed runs fine replaced spark plugs checked fuel hose seem to be ok could old fuel be problem
If the fuel has been sitting for more than 3 months, then sure I would start there. Also you mite be looking into a carb overhaul! Keep us posted!