My son bought this bike, and it rode home ok. A few days later it died on him and we cannot cet it to start. It is not producing a spark. Have tried new CDI, new coil and plug and checked ignition, still not working. Any ideas??
You could turn the idle screw to tick over a bit faster but if only does when cold probably a choke problem
J
January 2022
I have yiying 125 scooter won’t start I’ve checked loads on it but I don’t think it’s getting fuel is there a way to by pass fuel lines or ignition
J
January 2022
my yiying 125 wont start when its cold and it wont go into a tick over becuase if it goes below 2RPM then it dies. any ideas on how to fix this problem?
rick
May 2009
Make sure the side stand is up.
It will not start with it in the down position.
Mart
March 2009
have you checked the side stand switch? usually cuts engine out when side stand is down.safety feature. might be shorting out.
jon.
January 2009
-Disconnect the kill switch wire and possibly ignition switch too.
-Check for high voltage discharge from
CDI to the ignition coil.
-check for power coming from coil under the flywheel
up to charge the CDI capacitor.
-Check flywheel for rust or sheared key.
-check stator/lower coils.
-check for loose connectors and grounds.
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