ok ... so my vespa's not running again. i rigged up the decompression cable and that worked ... briefly. now i'm back to manually holding it down w/ my hand while i try to start. that used to work ... until ....
i got an airbox today, so i put that on. while i was at it i cleaned the carb. it was rather dirty w/ rusty fluid. so i got that all out. cleaned it really nice. then i put in a 51 jet (replacing the 49) to see if i'd get a bit more power. the bike ran nice for about two blocks ... then just died on me.
i haven't yet got back to it ... so i'll have to work on it some more (but no time now). anything i should look for? or is it just the jet? the sparkplug is only two weeks old ... and the bike ran fin before. the only thing different now is that it has an airbox (none before) and a 51 jet (instead of 49).
i'll try the smaller jet again first chance i get. i hope that's all it is. i'm used to larger dellorto carbs that take larger jets ... so i'm not sure what jet size i need for a dellorto 12.12