Hey guys just bought a new to me 1977 vespa bravo that looks to be in pretty good shape, only issue is I'm having issues getting it started
I've looked in the wiki and the Haynes manual through this site
I've put the bike in "motor" mode by pulling the button out on the rear, the clutch bell housing spins freely with pedaling but the belt and variator off the crank shaft do not spin. I have depressed the decompression lever too as I know that's important for compression. Eventually the starting clutch shoes do engage turning the belt for a second as well as the variator but that's it. If I keep pedaling it will continue to try and catch with the belt moving slightly.
I have had the plug out and a compression tester connected to test for compression the only way to get anything is to manually rotate the variator, which does turn the belt and the clutch bell housing but it's pretty much maxing out at 30psi if I rotate by hand.
The belt tension may be slightly loose but I read the engine location isn't movable in the variated models, also when I rotate the variator portion by hand the belt and bell housing rotates as it should.
I've taken apart the clutch bell housing. The starter shoes look to be in shape although they are on backwards from how they should be. Although I've read that that is ok through this forum. I'd be happy to attach a photo
When I bought the bravo the spark plug was slightly fouled with oil (running rich?) But I haven't yet managed to get any spark.
Does anyone have any ideas of how it should go? I'm hoping it's something silly and I'm missing something small, thanks!