I took my ranger bass boat out for the first time this year and after about 20 seconds we got an alarm. We shut the engine down brought it back in and checked the oil in the tank. It was more then half full. We ran the engine again and got the same alarm. We then put oil directory in the gas to make sure the motor was getting oil. We tried running the engine again until we got the alarms and tried to manually pump the gas bulb. The alarms stayed on.

The alarm was a fast a fast beep at high rpms but then when we slowed the the throttle the beep slowed down and rang about every other second. What can this be?

the motor is a 1994 v6 Johnson fast strike 150hp