Hi temp warn, engine or ? bubbling

[Hecyan]

Well after running in shallow water I am getting the h temp thing..
I flushed the intercooler and inlet toward the pump. I went out and still getting the H temp warn. After the pass I took out the seat and I heard bubbling like boiling water. What might this be.. Coolant level fine.

Should I take the pump out and J pipe?

What might be the cause of bubbling?

Thanks

[Shibby1485]

sounds like water boiling away in your waterbox... i've had that before, check out the J-pipe water pissers