Here is my problem.I have put a deposit on a 1993 31' Beneteau and part of the boat check was to have the engine started and run for 15-20 minutes on dry land. Keep in mind this is Cape Cod in January although the temperature that day was in the 50's. The engine had not been started for at least a year. It is an 18hp Volvo diesel with a closed fresh water system and raw water cooling. I told the broker I did not want the engine started until I was present to observe how it started. As you can guess it was started the day before by the boatyards carpenter. Yes I said carpenter. He told me that it took a long time to start. I also noted that it took about one minute of turning over before ir reluctantly started.He had a 5 gallon jug of water hooked up to the raw water cooling intake. He thought it was just raw water cooled. It ran about 3 or 4 minutes and he shut it down because the water supply was gone. I told the broker that that was unacceptable, so she said that she would have the mechanic set the engine up to be run for a longer period of time. I left and came back to find that the mechanic had attached a garden hose with domestic water pressure (about 40 psi) to the raw water intake. He then tried to start the engine but it would not even turn over, just made a humming sound. He thought the battery was dead so he tried a fully charged battery, but it still would not turn over. It seems to me that you should not use a pressurized water supply hooked up to the raw water intake, because wouldn't the water enter the cylinders through the exhaust manifold and cause the the engine to try to compress the water when trying to start the engine? This would be a good reason for the engine to not turn over the second time when the mechanic tried to start it. Sounds to me that I should get my deposit back.What do you think? Any Marine Diesel Mechanics out there?I need an answer as soon as possible.Thanks in advance.Norm Hildreth