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Smoke out of front of Stella 4T

 
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pfhat
Member


Joined: 21 Jul 2020
Posts: 3
Location: seattle
stella 4T

PostPosted: Tue Jul 21, 2020 7:49 pm    Post subject: Smoke out of front of Stella 4T Reply with quote

I'm getting a somewhat neglected ~2014 Stella 4T up and running and finished rebuilding the carb and things seemed to be going fine yesterday in my test ride. But today after maybe 10 minutes, gray/white smoke started coming out of the FRONT of the scooter. Specifically up from the steering column, and had the visual effect of coming out of the grill. The only thing I can think of that's up there is burning electronics, or brake pads.

It vaguely smelled like clutch/brakes but not enough to really be distinctive. Anyone have thoughts?

unrelated: does anyone know of a replacement keihin air screw for the PB18/PB20 carbs? preferably one that can be finger tightened instead of the obnoxious D head that's required now
Thanks!
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Mr.FixIt
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Joined: 01 Aug 2018
Posts: 137
Location: York, PA, USA
2009 Stella 2T

PostPosted: Tue Jul 21, 2020 8:15 pm    Post subject: Reply with quote

Be cautious about abraded wiring harness conductors in the steering column. The insulation can wear off the wires and then they short to ground against the metallic frame of the scooter.

Poke around and look for bare wires.

If the brakes were smoking that badly the bike probably wouldn't roll easily.

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Eric
(aka Mr. Fix It)
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pfhat
Member


Joined: 21 Jul 2020
Posts: 3
Location: seattle
stella 4T

PostPosted: Tue Jul 21, 2020 9:44 pm    Post subject: Reply with quote

Just did a quick experiment. Kick started her (I have a total dead battery), and let her run for a minute or two then throttled up around 1/5 or so. This is all with her on her stand.

sure enough, gray/white smoke starts coming out of the neck of the steering column between the front panel and the handlebar assembly. Didn't see it come from the front tire area at all and did a quick inspect undenearth. doesn't seem to be anything in the engine area. Didn't see anything inside the glove box either. So I guess I'll have to get under there and check those wires. Is there an easy way to access there?
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pfhat
Member


Joined: 21 Jul 2020
Posts: 3
Location: seattle
stella 4T

PostPosted: Wed Jul 22, 2020 12:14 am    Post subject: Reply with quote

well something is burning badly in that whitebox



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Guff
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Joined: 29 Jun 2008
Posts: 41
Location: Johnstown PA
2020 RA GT150, 2009 Black Jack, 2009 Vespa GT200, 2010 Stella

PostPosted: Wed Jul 22, 2020 4:28 pm    Post subject: Reply with quote

same thing happened to my 4T

https://www.scooterwest.com/power-switch-module-genuine-stella-4t.html

That's the culprit
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