Any one got any ideas on an engine cooling problem. Volvo will be fixing it under warranty (as they are already working on a fuel problem!).
The engine is 6 month old Volvo MD40. Today I noticed that while running it hard (2,700revs / 6.5knts) there was a constant flow of water coming out of teh coolant overflow at the top of the fresh water header tank. Not sure of flow rate, Maybe 100ccs in a few minutes, but the water tasted of salt. Obviously water is getting from the sea water side of the cooling system into the fresh water side. There was no trace of antifreeze - must have all been washed out.
I suspect this has been happening since the boat was new in Julyl as we have had water in the bilge that I have not been able to work out where it was coming from. I check the water level every week in the header tank and it has been fine -hence never really looked closely until today.
Any ideas what sort of thinks go wrong on a brand new engine. It would be useful to know a bit more about this when the Volvo guy is down.