My 77 Vespa Bravo has a problem where after running at high rpm for about thirty seconds the engine will suddenly die. Then, after letting it idol for about a minute, it will run fine again, then 30 seconds later die again.
I was wondering if this could be caused by fuel overheating problems, or maybe it’s just the engine overheating in general?
The interesting twist is if I prop the bike up on its stand, then run the engine on high rpm, it runs fine without any problems.
does anybody have any clue?