On Tue, 23 Nov 2004 04:30:36 GMT, "Jay Honeck"
wrote:

snip

I didn't have time to work on the plane today, but I'm gonna yank that plug
and have my mechanic test it in his brand new spark plug tester -- the kind
that actually pressurizes (or does it lower the pressure?) it while testing.

If that's not it, I'm betting on the wiring harness.

Swap all the plugs top-to-bottom. If it is a bad spark plug (which may
pass the bomb test just fine) the next time the problem rears it's
head it will be on the other magneto.

If your local guy has a high-tension lead tester, testing the leads is
simple and fast. You could check just the one with the "issue", or
when swapping the plugs top-to-bottom, you could check them all.

As someone else indicated, oil on the lower plug wires is a bad thing,
and not what I would consider to be typical (or acceptable).

I'm curious, what type of mags are installed? How much time is on the
engine/mags since you bought the airplane/had the engine major'd?

TC