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Okay, it has been a while since I updated the information on this post, but I have BumbleLove (the scooter) running again. Back at the top of this post the story of the stall is told. We have not been able to start BumbleLove since then. I read a lot of things about what might be going on here, and I was kinda afraid of what I might have to do just to get running again.

I decided I would order a new intake manifold, starter coil, CDI, and a carburetor to try and get this worked out. I waited until all of the parts were delivered and then I decided to get 'r done. I installed the starter ignition coil first; no start. I installed the CDI next; no start. I went back to the original (OG) coil; no start. I put new coil back on and went back the OG CDI; no start. I put both new parts back on. I then installed the new carburetor. I had to charge the battery a few times to keep up with this testing. I cranked the motor for some time, but then there was magic .

I thought we were ready for the road, but I wanted to test things out before my wife and I both went riding; good thing too. I noticed after a short while the idle would be rough and I had to give throttle to keep it running. I knew this was not how it was to be. I looked into air/gas mixture and idle settings. I messed with the air/gas and verified roughly 2.5 turns out from closed, waited for the warmup period and set the idle to "sound right" (as I don't have the vac tool). All that was setup fine...

Driving home from the test run I stalled... Hmmm... must be the mixture/idle I thought, but the stall happened at 55mph... not idle speed. I had to get home, though, so I went through the motions and discovered the spark plug wire had fallen off the plug. Reconnected and bam; running. I drove down the road some more and stall... Again... Checked the mix and the idle and turned out the wire came off again. Plugged it back in and snugged it with a vac line that was close-by.

Turns out the new ignition coil doesn't really fit the spark plug that well. I couldn't figure a way to make this dependable. I stopped by an auto parts store and looked for the "nub" for the end of the spark plug, but that would have been way too big. I ended up taking a wire and separating the jacket from the strands of wires inside. Then I wrapped about ten of the strands around the threaded top of the plug, carefully, and screwed in the spark plug. Then I gently pushed/turned the coil onto the plug and used a zip-tie to try and secure it to a near-by plastic piece; I hope it will stay on... Does anyone have ideas for this? Maybe a new thread for "Scooter spark plug ignition coil troubles".

I then started it, waited for warm-up, and rechecked the mix/idle settings. I noticed that the engine would surge and made setting the idle very hard. I would set it to where it would keep running (warm now) and then it would surge and start spinning the tire. I knew this was not going to be good for the belt so... I looked for more. I heard this hissing and I couldn't think it was right. I lifted on the carb and it stopped; the intake manifold split was causing it. I was going to wait on replacing that, but it was causing me to not be able to dial in the right idle speed due to the surging of the scooter motor.

All seems to be well now.. Thanks for all of your help!!

John, I just tried this and it didn't start.. I used carb cleaner instead of gas, but it didn't start. Maybe a sputter, but didn't start. Does that say anything?