[hoaga]

I am noticing a lot of gray smoke in my exhaust when I push it to higher RPMs. What could be the cause? (I don't think it is white smoke, nor black smoke either... seems pretty solidly gray).


I have just changed to larger props (for completely independent reasons)--and the problem got worse. Note, the problem existed before the new props--just not as much. I am replacing the new props with new blades to reduce the pitch a bit, so I can get into my normal WOT range.

The engines have about 2800 hours on them. And have been continually maintained, with oil and filter changes, and fuel filter changes. Etc....

Thanks