I need some help with my 2011 200 6.0 overheating. It was only doing it when pulling barefooters at 39 mph for a long pass but did it this morning to me while skiing the course at 34 mph on the 4th pass of our 3rd set.
I will try to give some background of the boat without boring you guys. This is my third season with boat. I bought it with 1250 hours on it, guessing it was a ski school boat, it now has about 1450. The first season it did it overheated and went into limp mode a couple of times. The second season I changed the impeller, temp sensor and gauge because it read over while 100 it was cold. The gauge seams more accurate. This year I installed a new thermostat, when I took it apart I found there was not one there. It does have a closed cooling system and the coolant level is fine.
I'm just curious where to look next. I have not pulled the caps off of the heat exchanger yet, not sure if that's the next step. I'm also not sure if the exhaust hose can collapse and restrict flow. Or if the engine water pump can have impeller issues.
Any suggestions would be great. Thanks for your help.