Re: coolant problem - any ideas?
Bet ya a tenner (not a large Italian one ..) that it's your impeller. Happened to me last year. Shot down to a fishing mark, no problembos on the way down, left it to the last minute to get back for the bridge lift, shot back at top notch, ooops turkish bath off Lowestoft. Scarey isn't it. I found that the friendly Nanni serive engineer (who'd been to my boat two weeks previous) had noted "impeller OK" but when I removed it as part of the lengthy diagnosis it was "set" and even worse one of the vanes was set in the wrong direction. He'd never taken it out - only the £400 it cost me to give him a day out at the marina. Changed the impeller, topped up the coolant, been as good as gold ever since.
Fret not - diesels are forgiving [img]/forums/images/graemlins/ooo.gif[/img]
Just a beer drinker with a fishing problem.