496 Water Ingestion HELP
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496 Water Ingestion HELP
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
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
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Pull it apart and see if the flappers are gone.
While you have it apart water test the manifold assembled.
Do you have center rise exhaust manifolds ?
Often times the gasket between the elbow and the manifold starts leaking internally into the cylinders from corrosion build up over time.
I believe you can position the manifold on a bench , introduce water to it and see if you are getting any water dripping into a cylinder, they should be absolutely dry.
While you have it apart water test the manifold assembled.
Do you have center rise exhaust manifolds ?
Often times the gasket between the elbow and the manifold starts leaking internally into the cylinders from corrosion build up over time.
I believe you can position the manifold on a bench , introduce water to it and see if you are getting any water dripping into a cylinder, they should be absolutely dry.