I agree with the previous posts, but if you keep flicking it 8 more turns, you might be flooding the engine. To repeat do the following:

1) Make sure engine is free from access fuel. Open throttle and flip the plane over (nose down), watching for any fuel dripping out of carb. If dry good, if not let it all drain out.
1a) If there was fuel there, flip prop a few times (w/o Glow Starter), this will help to 'dry' it out. (ok, you can turn plane back over)
2) Now open throttle, cover carb, and flip 2-3 times or whatever it takes until you see fuel from the tank enter the intake line into the carb. While keeping the carb covered, close the throttle.
3) Rotate prop (CCW) until you feel the beginning of the compression cycle.
4) Attach glow starter (wait 1-2 seconds for heat), open throttle about 3 clicks or 1/8" travel, and flip prop w/chicken stick.

This should work, if not you might not be giving it a good hard snap. These are the most basic steps that you should keep in mind to start an engine. Even if you use an electric starter, follow the above....4-strokes are different and I can't comment, forget ducted fans, I don't know, and Turbines, I wish!!!