I recently had a problem with water in the bottom cylinder...I also had the water alarm constantly going off. The water in the cylinder was because of the exhaust cover gasket being faulty. After removing the cover and drilling out many of its bolts as it was corroded, we finally were able to replace the gasket and attach the exhaust cover on. Now we have no leakage in the bottom cylinder.<br /><br />We tried the boat in the water and the water alarm is still going off...periodically. And it goes off most of the time, or almost all of the time. I did a thermostat check and placed it in boiling water...it opens and cloeses nicley. It kind of feels like the top two cylinders are still hotter than the bottom. Does the water flow sensor actually 'float' in water??? We did a test in a pot of water and it doesnt really float which is what i expected as it is a 'FLOW' sensor which should tell you if water is actually circulating throughout the top end.<br /><br />Also the manual says that there could be possible misplaced or damaged 'water passage restrictors' and the manual doesn not state exactly what or where this type of thing is. I am assuming it is the passageways around the cylinder head and etc, and that it could be blocked. <br /><br />Hope someone here knows what kind of problem i possibly might have.....
