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Looks like where my scooter's carb bowl bleeder tube runs.

Does that nipple go into the belt housing area or toward the rear end gear housing? If it's going to the gears maybe it's just a spot to attach a collection hose when you swap the rear end gear oil. If not maybe supposed to go to the airbox like sailracer said.

If you're getting too much pressure in the crank case to the point you're blowing oil out of it then my guess would be a ring issue as well. Have you tried a compression test? Is the smoke coming from the tube foggy and white? If so it's probably air/fuel mixture blowing past the rings and pressurizing the bottom end.

Yeah, I'd definitely start with no carb on just to see if the problem is there or somewhere else. If you have some ether spra, brake cleaner, or starting fluid that would be a little more controlled method of dumping some fuel into the intake hole, but either way I'd figure that out while I'm waiting on the slowboat to deliver the missing bits.

Has anyone done the numbers on these air scoops to see how much they aid cooling? Are they beneficial to any scoot or just ones with a bbk?

Sorry if the poll bugged you, I meant it half in jest. Also, I didn't make a "My scooter won't start what do you think" thread. I had a strong suspicion of the problem and am just looking for anything I might have overlooked and/or comfirmation of my suspicions. I also did say in my first post that the valves were good, the carb is brand new, and though I didn't post it, I drained my fuel, carb bowl, and lines before refilling the scooter with fresh gas and there's a brand new and properly gapped NGK plug in the thing and I checked spark before posting. Sorry for not having mentioned it.

Thanks guys, never heard of the hollowed spark plug pressure thing before. I'll give that a go.

I did get it up and running now with jumpers to a car battery to start it. Takes about 5-15 seconds to start with the throttle about 1/2 way held. Still won't start on it's own battery or kick, but once running it'll do the usual 30-37mph on a flat road. Of course then I had someone try to run into me when they ran a stopsign, I e-stopped, and the thing chugged out, making me have to roll the thing back the mile or so to the house. Guess that'll learn me not to ride too far from the house on scooters that can't be started without jumper cables....

Any suggestions on where to get a new cylinder and piston kit from? Found this kit from via craigslist looking for a potential parts scoot www.valleyscooterparts.com/cypirigawrpi.html and then called a local shop that wants 130 just for the parts kit. Pretty wide spread there!