Why is my outboard overheating?

Question

The overheat buzzer keeps going off. The water is coming out of the telltale hole. I changed the thermostats for new ones, I checked the waterpump and it's working fine. The engine buzzer goes off almost instantly - not after running for a while. What's my next step?

Answer 1

Replace the temperature sensor.

Answer 2

You know that the motor isn't hot immediately after starting it and the water is being circulated through the motor, as evidenced by the tell-tale hole- therefore the sensor needs replacing.

Answer 3

Maybe something got sucked into the water intake or the sensor is faulty.