Hi guys,
Just wondering if anyone has had this issue before I've had issues with the water pump have changed the housing impeller cleaned the pipe thats comes out of the water pump have had a marine mechanic look at it and spent over a grand changing side plate gaskets and checking water pipes with still no fix the boat starts and pumps water out fine when I rev the motor with no load its fine water pumps out and it's Luke warm once on the water idling water pumps out fine as soon as the speed gets over 6 knots the motor gets hot and the motor kicks back into neutral if the speed is over 15 knots steam comes out of the engine and It kicks back into neutral I am thinking possibly a blockage in the head but other than that no idea