Went through the ignition and carb again today.
I noticed that the throttle plate was a little wonky
on the shaft, and not shutting tight in the bore
between the two little low speed circuit fuel feeds.
Some re-adjusting and a touch of loc-Tite seemed to
improve the fit.
I’m not sure I’ve seen a throttle plate / butterfly, that
doesn’t go all the way to the bottom of the bore.
Is this original on the AJ40A carb?
Also noted that the low-speed jet tube didn’t have one
of those little red fiber washers on it. I’m not sure if
it’s supposed to on this carb, but I added one.
The carb bore in the block isn’t round, and is slightly
bigger that the round bore in the carb, which seems
stupid to me, not to mention a quandary when making
a new gasket!
I put the magneto back on, and went to sync the points
with my buzz box and a TDC dial indicator.
The bottom cylinder set of points was not making good
contact to “set off” my buzz box.
I re-worked the points trying to get the two “point halves”
to close squarely, but only slightly improved them.
The were only making a tiny contact area, and slightly
etched in that area.
Will have to see if I can get some new ones.
The points in it are REPCO brand, so I presume not original?
The after-market OMC coils and condensers I used, had huge
terminal ends on them, making a good connection to the point
sets a challenge. I should have done this the first time, but I
removed said terminals and soldered some dainty ones on.
I only put back together necessities needed to make it actually run,
in case it still won’t idle or keeps dropping a cylinder.
I haven’t got around to looking at the rattle-trap rewind yet anyway.
Hopefully tomorrow some time I can barrel test again to see
if I made any improvements.
Prepare to be boarded!