> "decided to address the issue by buying low resistance leads rather
than replacing the coil(s). What's the thinking there?"
Well that's easy enough to answer :-) Replacing leads is a lot easier,
and cheaper, than replacing coils!
To elaborate on that, the leads were well beyond their useful lifespan in
any case. That needed to be done whether I replace the coils or not. It
was just my good fortune that replacing the leads was all that was
necessary to get rid of the miss. Part of the process of leads
deteriorating over time is that they develop increased resistance (or so
I've been reading . . . I'm certainly no guru on this). My old leads had
more resistance than they had when new, thus less energy was making its
way to the spark plug. Reducing the plug gap helped with that situation,
but that wasn't a true fix, it was just a stopgap measure - something one
might do just to get home. Secondary plugs are now gapped at .040 which
is what Steve Bennett specifies in his manual.
I've yet to take the plane up to altitude and see if the engine runs as
well on just the secondary system up high as it currently does on the
ground. I'm not expecting it not to, but in thinner air ignition systems
can act differently than they do down low. I'm thinking primarily of
magnetos rather than coil driven ignition when I say this, but you never
know. I'm going to take it up this afternoon and see.
Replacing the coils will require pulling the engine forward to get at
them - so replacing them involves some work. ("WORK!!?", as Maynard G.
Krebs would put it).
I'm a very electrical person. I take the path of least resistance.
I _would_ like to test the coils however. Would someone be willing to
advise me on how to test coil output?
Mike
KSEE
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