BTW, since my FBO started using some fuel additive (sorry- I don't know
what it is offhand) they've experienced NO plug fouling. I can
corraborate that based on 30+ hours of flying since then- not one plug
fouling whereas it used to be quite common (and, yeah, we always burned
it off).

O. Sami Saydjari wrote:
I just received a booklet from TCM called "Tips on Engine Care" (a very
good book...available from TCM's website...http://www.tcmlink.com/). On
page 12 it says "Never but never attempt to "burn out" a magneto drop
with ground run-up. This 'time-honored' procedure succeeds only at the
expense of the engine's mechanical health."

Well, I was taught this time-honored way. What the book does not say is
what you are supposed to do when you get roughness in one magento. Ideas?

-Sami
N2057M, Piper Turbo Arrow III