hi there, I have a gas gas quad with no spark, I am guessing it's the coil pack but I am unable to find a replacement to try, any help where I can get one or how I can test the old one ?
There's more to it. There are lots of components invloved in making a spark:
1) Winding on the stator that powers the CDI
2) Pickup device outside the flywheel that triggers the CDI for spark timing
3) The CDI itself
4) Ignition coil
5) Spark plug cap
6) Wiring and connections for all of the above
Replace your spark plug cap and then check that the coil is grounded securely. Past that you need wiring diagrams and a multimeter.