Why won't my Kymco People 150 scooter stay running?

by Pam
(Phoenix AZ)

My Kymco People 150 scooter runs great at full throttle, but when you stop, it dies. I tried turning up the idle, tightening the throttle cable, cleaning the carb, changing the spark plug... but it still dies when I stop.

Any ideas on what I can do to fix this problem?

Comments for Why won't my Kymco People 150 scooter stay running?

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Jan 20, 2011
Why your scooter wont run at idle
by: Anonymous

I apologize for reposting this comment. Your problem is probably the PILOT jet in your carb. That is the smallest one, with the smallest hole, and it is clogged. If you unscrew it from the carb body and punch a piece of wire through it to make sure it is unrestricted, your bike will run fine again.

Even better, is to get a precise wire gauge, ( Plumber supply store. $5.00) and use the proper size wire to clean the jet, so the orifice is of the proper internal diameter and will allow the gas to flow at its proper volume for the Pilot jet.

The reason it does what its doing is because there are two main jets in your carb. The Pilot jet, and the Main jet. The pilot jet is the one that sucks fuel to make the bike run at idle, literally sipping fuel from the tiny oriface.

When you turn the throttle past 1/4, it moves a butterfly plate at the intake side of the carb out of the restricted position in front of your engines intake, which cause the engine to suck harder and draw more air through the carb throat, which in turn causes the carb slide inside the carb throat to rise up, which then takes the draw of vacuum off the tiny pilot jet, and onto the main jet, which is the jet that gives you power from low to high throttle settings.

When the pilot jet gets clogged, it will cause your bike to either run funky at idle, or not run at all. Hope that helps.

Jan 20, 2011
by: Anonymous

If it is a carbureted bike, the reason it is doing this is because the primary jet, the smallest one, is clogged. Unscrew it from the carb body and use a piece of wire to clean it out. Your bike will run fine.

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