It's def overheating under load. It's not a fuel restriction or low oil. It doesn't have a mixer on it so the oil is mixed directly into fuel. The alarm sounds and shuts the boat down, if it were a fuel restriction you would beable to choke it and it return to speed also the fuel bulb is not...
I have a 2 stroke older johnson 150 fast strike. When I put my boat in the water if I go over 4k rpm's the alarm sounds and the boat shuts down (overheating) this is what has currently been done and it's still doing it. Any suggestions would be welcomed.
New water pump
New thermostats
New...