I have an early 8N (front distributor) converted to 12 volts about five years ago. Over the summer it was starting very well, however with the colder weather it has been getting harder and harder to start and now it won't start at all. The carburetor (original M&S) was recently rebuilt. I checked the spark by sticking a wire in the end of a plug wire and turned the engine over. The spark looked very weak to me. The distributor had new points, condenser, coil, rotor and cap about two years ago. I pulled the distributor and the points look like they are properly gaped (haven't checked with a feeler gauge). Anything specific I should check? Any other suggestions?

Agree with others. I use some emory cloth to lightly clean the points. I also store my 9N with the points closed so they do not oxidize by bumping the starter and watching the ammeter.

In a hurry? File and regap the points.

I keep some GC electronics 9338 contact burnishing tools in my tool box. They are good for points that are mildly oxidized as they don’t take off the coating (tungsten? Can’t remember). After the coating is burned or worn off the base metal oxidizes quickly and pits. I will file the points to see if that is the problem, but will order new ones a soon as possible. Just my 2 cents…

Agree with Del. I can't points to last more than two years.

Had the same problem this fall. Weak spark and then not starting. I replace the points and condenser and that solved it.