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Stalling at stoplights

Posted: Sun Sep 17, 2017 12:56 am
by scootingteacher
After a long stoplight, when I turned the throttle to accelerate, it just cut off! Of course, this would happen at dusk on a major road that I normally avoid due to the heavy traffic. I've read that this problem is relatively common after long periods without driving, but I've at least driven my scooter to and from work (granted, only a mile each way) every day this week without an issue. I added oil, but it still turned off when I tried to accelerate after idling in my parking space for several minutes. Is there an obvious and simple fix, or should I just call my dealer?

If it's not completely obvious, I'm relatively new to the scooter life and definitely not a mechanic.

Thanks for your help!

Posted: Sun Sep 17, 2017 2:17 am
by babblefish
Try adjusting the carb for a higher idle speed after the engine is fully warmed up. Small adjustments only - 1/8 turn at a time. Clockwise to increase idle speed.

Posted: Sun Sep 17, 2017 3:52 am
by sc00ter
My 98 Zuma stalls at idle, I've just been to lazy to look up what screw does what. You should be ok to just crank the idle in like babblefish said, while its warmed up. Did you have your Buddy 50 de-restricted? They are quick scoots for stock 50's. Oh, and welcome to scooter ownership from Norfolk VA!

Posted: Thu Sep 21, 2017 1:05 am
by Ootscoot
If it idles ok, but stalls on acceleration, more likely a slightly clogged idle jet.
If it dies at idle, may need a valve adjustment.
I would not add oil unless it was low - excess oil can clog the air filter, causing these same symptoms.
Adjusting idle speed may be all that is needed.

Posted: Sun Sep 24, 2017 2:38 am
by sc00ter
I messed around with the Zuma carb today and got it pretty spot on. Still a bit low on its idle rpm (think the pilot may be gummed up) but its close enough for me. scootingteacher, did you ever get yours ironed out?

Posted: Sun Sep 24, 2017 4:46 am
by Dooglas
Ootscoot wrote:If it idles ok, but stalls on acceleration, more likely a slightly clogged idle jet.
Agree. Seafoam is sometimes a simple solution short of actually dissembling and cleaning the carb.