I have a 55hp ENINRUDE OUT BOARD MOTOR 1979 on a 16 foot ponntoon. one day I get about 5100 RPM but now the average RPM I am getting is 3,000. I had the engine checked, Replaced gas lines, but nop power
What would be the average Speed and RPM at full throttle
What would be the average Speed and RPM at full throttle