Hi I'm James. I just fitted a Gas Bike 66cc engine kit and eventually after bleeding the carb it started and ran for about 15 minutes. Will not start again. Seems to be a lack of spark. I'm in the same boat as Freaked Out member. Dont know whether it's the plug or ignition unit. Did connect plug to car and it sparks. Wiring all seems to be ok. Did remove kill switch from system and made no difference. Any more advice. Thanks, bye for now James.
Most of these early ignition deaths seem to be magneto related. Some can be repaired as it appears that sometimes it is simply one of the windings on the mag gets disconnected. Replacements are cheap though.
If you made the same mistake as me and mixed the oil in the tank the oil is heavier than fuel and goes to the bottom fast if you drain the bowl out it will likely fix it. It's hard as heck to get it started when it gets oil soaked in there. Nice big hill is your friend.
You should check your spark with the bike engine. You'll need another set of hands for this. Remove the plug and put the plug wire on the end of it. Hold the plug threads against the engine to ground the plug, and turn the rear wheel with the clutch lever out - like you were going to start the engine. It should turn fairly easy with the plug out. Watch the electrode for spark.