Be careful starting an engine that may be flooded. The situation is called hydrolock and the engine won't turn over since the liquid filling the cylinder is much less compressable than air (or air/fuel mix). In addition to spinning the prop off, you run a significant rick of bending or breaking the crank. After choking the engine and priming, always turn the engine over by hand once or twice to make sure it isn't hydrolocked before spinning the prop with a starter. If it is hydrolocked, remove the glow plug, invert the plane and turn the engine over several times to expel excess fuel.

Ross