Hey Buccaneer, did you fix the problem?

Not sure, but it’s running on two cylinders again in the test barrel.
I decided the top coil issue on the Stevens tester using the probe,
getting small sparks off the laminates, probably wasn’t the issue.

I installed another new plug wire on the top coil, as the one I removed
had been touching the sharp edge of the laminates, leaving a little indentation
in the plug wire. The test probe didn’t show the wire to be leaking though.
The coil ground wire and primary wire to the points come out of the coil
touching each other, and twisted around each other. The primary wire’s
insulation looked to have a few cracks in it, so I dabbed some liquid rubber
on it.
The original, “cracked up”  coils were grounded at the condenser hold down
bolt. I had the replacement coils ground wire grounded to the points
hold down bolt. After I untwisted the ground and primary wire it was long
enough so I could attach the ground wire where it was suppose to be.

I don’t know if any of this made a difference, but I also replaced both
new Champion plugs with two more Champion plugs. I’ve heard some
grumbling on the Net about the quality of Champion plugs now days,
so perhaps that was the problem?

Said Martin started in the test barrel on the third pull, and ran on
two cylinders again. I could only run it slow, so I put it on the boat
for another lake run, soon, I hope. I’m so confident, that I even
put the cowlings back on! :-O

Tubs, I’m hoping on the next Martin 100 boat test, oars will
only be required to get the boat off shore for “start up”!

Tubs, Yikes! Win some, lose some, for sure.
I never had that misfortune, but when I went to test run
a Speeditwin on the boat years ago, after going all through
it, after a short run something was rattling. At first, it
sounded like a “spark knock” / pinging, but not likely
on an outboard. Probably had rod issues as well.
I never did open it back up…… maybe someday!