Hey guys new to the forums and looking for some light of something I might be missing, real quick I have a 1997 5.7 under the Volvo brand, last year the boat sat up for about 3 month with out starting, well when I went to crank it,, it was locked. So I started to pull it apart and found a very small amount of rust in the #3 cyl.broke it free and clean up the small rust spot on the cylinder. While the heads where off I had them looked at and machine, bought new head gaskets and put it back together, well she started fine and ran fine out of the water under no load, when I got it in the water it was a different story, cruised it at about 2500 rpm for about and hour ran good no temperature issues good oil pressure, as soon as I gunned it to plane it started making a what I at first thought was a loose belt, so I backed off the power and realized it was more of a whistling sound, I shut it down . steam started coming from the carburetor I mean it sounded like a boiling tea kettle. I called sea tow ,, would not restart, I ran a compression check and found #3 with only 50 psi buy the way no water in the oil or cylinder. Pulled the head off and can not see were the gasket might have failed. No damage to the cylinder?? Before I start putting it all back together I would like some insight of what else to look for I having the head rechecked for cracks but other then that aim lost. Any help or ideas would be appreciated
