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Scooter stalls when stopped after 30 minutes of driving

 
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ItalianBoy
Member


Joined: 06 Sep 2007
Posts: 68

Buddy 125 Italia

PostPosted: Mon Jul 13, 2020 8:41 pm    Post subject: Scooter stalls when stopped after 30 minutes of driving Reply with quote

Hey all, I could use a little help.

I have a 2006 125 Buddy that I had let sit over a couple winters with bad gas. Rather than doing a full rebuild of the carb, I opted to just purchase a new "Genuine Buddy 125 Stock Carburetor w/adjustable mix" from Scooterworks.

Everything is installed, and it runs great...for about 30 minutes. After that when I stop at a light the scooter will stall out and die. Sometimes it will immediately restart, other times it may require a small wait.

I have tested the vacuum petcock and it seems to be functioning. Does anyone else have any ideas? This is rather frustrating.
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scootERIK
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Joined: 12 Jul 2012
Posts: 466
Location: Lake Geneva, WI
Buddy 125

PostPosted: Mon Jul 13, 2020 8:46 pm    Post subject: Reply with quote

Might be the stator.
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tenders
Member


Joined: 03 Dec 2018
Posts: 255

Buddy International 50 Italia

PostPosted: Mon Jul 13, 2020 9:34 pm    Post subject: Reply with quote

When were the valves last adjusted? Difficult warm starts are a hallmark symptom of the need for an adjustment.

Is the idle speed (the adjustment on the carb with a thumbwheel) simply set a little too low for current temperature conditions?

Stator: deep into the second order list of symptoms. Easy to troubleshoot with a 12V voltmeter/USB accessory plugged into the lighter jack.
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ItalianBoy
Member


Joined: 06 Sep 2007
Posts: 68

Buddy 125 Italia

PostPosted: Mon Jul 13, 2020 9:56 pm    Post subject: Reply with quote

1) I don't think ever
2) I adjusted it up a little. My understanding is that you turn it up just to the point that the rear wheel is turning on its own and stop
3) I can Google, but is there a recommended video explaining this? I have a voltmeter

tenders wrote:
When were the valves last adjusted? Difficult warm starts are a hallmark symptom of the need for an adjustment.

Is the idle speed (the adjustment on the carb with a thumbwheel) simply set a little too low for current temperature conditions?

Stator: deep into the second order list of symptoms. Easy to troubleshoot with a 12V voltmeter/USB accessory plugged into the lighter jack.
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tenders
Member


Joined: 03 Dec 2018
Posts: 255

Buddy International 50 Italia

PostPosted: Mon Jul 13, 2020 10:01 pm    Post subject: Reply with quote

Monitor the voltage to make sure it's reasonably steady over a range of RPMs with the engine cold and warm, and that it's between about 12.5-12.8V and 14.1V.
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Stanza
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Joined: 29 Jan 2018
Posts: 556
Location: Chicago
Puch Maxi, Roughhouse

PostPosted: Fri Jul 17, 2020 10:17 pm    Post subject: Reply with quote

This is a common tell for a stator (or rather the pickup coil) being out of spec, and due for replacement. Happens now and again with all bikes. Bet money a new stator will fix the problem.
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