Can I get some help have a 2005 Chaparral 256 with a 8.1 Volvo past couple of ttimes it would stall sometimes coming off plane not all the time but once in awhile. Today it ran great for over an hour then I come of plane and it dies. Locked up solid I know it had water in it so I pull the plugs and water comes out the starboard side second plug from the back. It has the Corsa exhaust but at the time I was running under the water. Non of the pliugs look like i compressed water so I don;'t think I damanged the tops of the piston. I know this can happen did it several years ago with a diffetent boat. So what do you think Exhaust manifold , head gasket ?

I disconnected my fuel pump and cranked it over several times with out plugs. No strange noises. I am going to reinstall the plugs and see what happens.

Thanks

Lucky if you did not bend a connecting rod. Do you have flappers on it?