so last night we took the boat out again and the hot light came on again. I checked the water port and it had a good stream. The water coming out was warm but not hot. There was white smoke coming out of the exhaust ports. This is engine has never done this it has 130lbs compression on each cylinder. I changed the spark plugs to champion and put in a new inline filter before i took it out gapped the plugs at .30. im at a loss as what to do. forgot to mention its a 2000 70hp jhonson 2 stroke