Daniel

I have one very important recommendation for you: Please find an experienced modeler to help you! There are many things that should be checked before a plane is put in the sky, both for the sake of the plane and most importantly for the safety of people on the ground.

That being said, an engine that runs with power to the glow plug, but dies when you remove the power, is probably adjusted too rich on the needle. If you carefully screw the needle in (clockwise) until it GENTLY hits bottom, then turn it back out 2 turns, you will be in the ballpark for most engines. Again, an experienced modeler could make this easy! The proper proceedure is to start the engine, using your glow driver and about one quarter throttle, and then in a few seconds going to full throttle. This is where you adjust your needle, noplace else! As you turn the needle out, the engine will receive more fuel and so run richer. As you turn the needle in, it runs leaner (less fuel). Your goal is to find the spot where the engine runs at its fastest RPM by turning that needle, and then turn it counter clockwise (out) about one quarter turn from that fastest setting. The engine will be running rich, but probably fine for a trainer plane. At this point, you should be able to remove the glow driver and the engine will still run. If it still dies, then you probably do have a bad glow plug.

After you get your engine properly adjusted, you will normally be able to remove the glow driver as soon as the engine starts.

There is another proceedure for adjusting the idle and low speed mixture, but one thing at a time!

Good luck!

Sandy T.