Home › Forum › Ask A Member › 1959 Evinrude 18hp Miss/Stutter? › Re: 1959 Evinrude 18hp Miss/Stutter?
If it’s starting and running, it’s probably not a fuel delivery issue. First you say "it miss/stutters than dies after a minute or so". Then later you say it runs fine aside from the stutter. Which is it? The primer button doesn’t pressurize the tank, it only pumps gas into the carb to get it running. Then the engine does the job of pressurizing the tank. You should hear a hiss when loosening the gas cap after the motor has been running. If you do, then it’s not a fuel delivery problem. But if you have to push the button to keep it running, then it’s a fuel delivery issue. You could have a lean-sneeze – adjust the slow speed needle by turning counter-clockwise to richen up the fuel to air mixture. If that doesn’t help, it could be a dirty carb or fuel filter. (have you rebuilt the carb?) or an ignition problem – bad coil, points (or dirty points), condenser or a plug wire intermittently shorting out.