Quote:
DavidM wrote:
Garry:
You describe excessive smoke at high rpm. That is a symptom of an overpropped condition- too much pitch or diameter that doesn't let the engine rev to full rpm. First see how high your engine will rev in neutral. It should reach its rated rpm plus a 100 or so. If not you may have a governor/fuel injection/turbo problem.
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*This is not entirely true. *There is a fuel cutoff point that will prevent the engine from revving any higher. *Mine happens to be 3800RPMs which is 500RPMs higher than max rated RPM. *The engine manual should have both of these figures.