I've been fixing my friends motron. And the main problem was timing. I cleaned and reset point gap, and re timed it. Points start to open at the first line. are about as wide as a piece of spark plug box at second. It had an NGK plug that was giving a blue spark, like every 4 turns. I would get pats and sputters. but no liftoff. I put in an autolight plug and it gave an orange spark, but it hit every time. so I hooked it all up and first kick she fired right up.
So I took her for a little test ride and as soon as I hit about 25mph. it would spit sputter and die. (the descending vrrrrrrrrrrrrmmmmmm sound) but if I let off it would kick back on and idle while rolling. Is this because of the weak spark? timing off a cunt hair?
16:16 SHA with puch side intake.
74 jet, stock air cover that comes on carb.
60cc Olympia kit.
any thoughts appreciated.