On Mar 21, 1:51 am, "Roger Long" wrote:
You say that mechanics have not been able to fix the problem. Are you sure
they did not try these adjustments?

Well, the last folks had the engine for over a month and might have
fiddled with it, but I don' think they did. 100% or respondents say
"fuel restriction or air in fuel" when I describe the problem, but so
far the ones who've attempted to fix it have failed. All the obvious
things have been done multiple times.

I'm beginning to suspect that you have a problem inside the governor itself,
corrosion, debris, slight manufacturing defect or tolerance drift is making
it sluggish to react.

Yes, that could be the case. As Bruce has pointed out these are well
made engines and it would be a rare affliction, but basically all
that's left unchecked is the governor and its adjustments and the
injection pump. Also, the fact that there seems to be a change when
the engine warms up seems suggest to me that there might be a change
in tolerances w/in the gov mechanism itself... And, makes the
injection limiter a less likely culprit. The injection limiter is a
bit of a hail Mary, but seems easy...

It also sounds like you might have too large an alternator.

In practice there's no doubt that the alternator is too large for that
engine. But, the identical machine works on the left side...

-- Tom.