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H Tune Up. If It's Not Broke, Don't Fix It?

G

GFPZ

New User
My 1946 H with magneto started very easily, and ran well for as long as I was using it. However, it would not start for a few hours after I shut it off once it was warmed up. I was given the advice to replace the condenser. I bought a magneto tune up kit for it and replaced not only the condenser, but the points, rotor, and magneto distributor cap as well. It now starts well, even after its warmed up - original problem fixed. I now have a new problem. After it is warmed up, it idles very rough - almost like a miss. (It idles well before its warmed up though) It also runs well at higher RPMs. I set the points at .013, like the owners manual says, though the spacer that came with the kit is .020. Any ideas why it is idling rough now? Should the points be set at .020, or is there something else I should consider? Thanks.
 
Moving the points will change the timing slightly.
If you set them a little wider they will open a tad
sooner. The mag can also be rotated a bit on the
flange to fine tune it too. Oh, and those little
gears in the mag that drive the rotor? They have to
be in time. You didn't move those did you?
 
(quoted from post at 08:01:30 07/16/11) Moving the points will change the timing slightly.
If you set them a little wider they will open a tad
sooner. The mag can also be rotated a bit on the
flange to fine tune it too. Oh, and those little
gears in the mag that drive the rotor? They have to
be in time. You didn't move those did you?
Click to expand...
If you mean the rotating part on the distributor body that covers the points and condenser chamber on which the rotor sits, then yes, I believe that moved. I didn't think that would matter since when putting it back together, the "D" shaped hole in it can only line up one way when sitting on the rotor pinion. The engine did not move at all while all the work was being done.
 
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