My magnum .15 sounds about the same, manual stated 2-1/2 turns out but this engine would only run at 5/8 of a turn out and is still running perfectly 1-1/2 years later at that setting. Since the engine is not running at all i would keep leaning it out until it does, also make 100% sure that you have a good glow plug with a FULLY CHARGED glow plug driver.