Points were a little tighter than .025 so I corrected that but I must have other problems. this still only produced the occasional backfire, the kind that comes out the carb and not the exhaust.
By setting the points to “just starting to open”
At 4 degrees BTDC where should I expect to see it actually fire? This seems to be the part I’m confused on. By using this setting I wouldn’t expect it to fire until it reached the 20s on the fly wheel markings. Or am I misunderstanding what you mean by “just starting to open”.