Join Date: Apr 2006
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Re: How loud is a single cylinder Yanmar supposed to be?
Zac, I've only been up close to a one-banger on one boat, and my reaction was pretty much like yours: Hey, is that engine going to blow?
When in doubt...get a diesel mechanic, or put some money into an escrow account for 90 days to make sure it keeps working, as a "warranty" amount.
Remember that internal combustion engines, all of them, work by creating a series of explosions, and explosions sometimes may seem violent and noisy when they're planned properly.