Sym Citycom 300i not sparking...

[motoflesh]

Hello my friends

I have Sym Citycom 300i and i can say it is a great scooter ... about 61313 km drive with no problems ...

Suddenly the spark was gone so i am not able to start it ....

I measure the primary resistance of the ignition coil (2.9 ohm) it is under specifications given by service manual...

Pick up coil (crankshaft position sensor) is also(118 ohm) in specifications ....

Roll over sensor , security switch under the seat ,side stand switch also work but there are no spark ...

I find another ECU from a crashed bike (not sure is it ok ) still no spark....

Self diagnosis test gives no faults ....

Would you please friends help to solve the problem?

Thank you in advance and best regards

[adesmond2]

4 hours ago, savvas said:

 

have you all tried the most basic of changing the spark plug itself?

and the spark plug head?