I have a 1999 Johnson 250 v-6, carbed outboard that will run fine from idle up to 2000 RPM and from about 3600 RPM to 5600 RPM. Between 2000 RPM and 3500-3600 RPM, the engine feels like it is not running on all 6 cylinders, it is very rough, sounds like it is missing and if the wind is right, I...
