TIP: Before suspecting your CDI ignition of being faulty, please ensure you have the spark-plug socket pushed all the way over the spark-plug head. In some cases this is extremely tight and requires alot of pressure.
At first I thank you for answer. I know the nitro engines don't use a spark. There is another princip. But some nitro engines is possible to rebuild to gas. It requires to assembly a sensor with magnet on the shaft to identify a position of the piston. The sensor sends a signal to ignition to generate ignition spark. Yes, before you have to replace the glow with spark - technically it is possible to do it. I already saw rebuilded nitro engines to gas, but I am not sure it this offered ignition system is the right. But 35 USD is not too much to try it ...:o)
No, you still have to flick start the prop like a glow engine. I make sure the ignition is off, flick the engine over 5 times, turn the ignition on, then put choke on. The engine should fire up for a short burst, then stop. Then turn choke off and flick start.It should then run. Make sure the throttle is set to idle before all of above.