bg clarifies:

-Its a gas genset. I have no clue how long it sat and if the old owner used
some stabilizer in the fuel.

I am guessing that it sat for at least 2 years.

And it surges all time time. load. or no load. you can even see it surging on
the boats volt meter-

Bilge- What have you done to the fuel system? Is your boat also gas
powered...and if so, do the mains also have these problems?

Is your engine breathing freely? Are your filters clean and your air intake
scuttles open?

Is your genny fuel injected or carburetted? At the very,very minimum, you
should be changing the genny's fuel filter(s).

You might also have condensation water in your fuel tanks...wanna know what
it's like to activate a steamship from the James River "Dead Fleet"? Ya lurn
about that trick fast when your boiler burners start sputtering.

Your voltmeter surging means that the genny is self-excited. You cannot, at
this point, rule out a governor problem, but this is sounding more like a fuel
/air problem.

G'luck;


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