[zAr]

I'm about to purchase a boat, haven't made the final decision yet. I was just telling the owner I want a diesel mechanic on board for the sea trial, that the mechanic would mostly be listening to the rhythm, noting any discordant beats.

At which point the owner informed me that when the engine RPM hits 1100-1200 there's a distinct engine vibration which has been a function of the engine since he owned the boat. He just quickly moves beyond that to 1500 to avoid the vibration.

The engine is a Volvo Penta 2002 on a 1986 CS30.

Is this a cause for concern?