"Robert M. Gary" wrote:
If you get next to nothing on a mag during runup,
don't switch back to the good mag or you may blow
out your exhaust. Let the engine die or pull the
power back to idle before you
switch back to a working mag.

Thanks, Robert; I never thought about that. I hope I have enough on the
ball to remember stay on the bad mag if it ever happens to me.
--
Dan
C172RG at BFM