RichardS
N/A
We had the raw-water anti-syphon valve fail and over the winter, water syphoned through the exhaust manifold, then into the engine. I naively tried to start the engine without checking and soon discovered there were 5 or 6 litres of seawater in the sump!
I assume that you left the boat over winter with the seawater inlet seacock open?
Richard