I have a 3W24 for my PT-26, great engine, never had no problems. This past weekend, I had one flight, the next time I went to start the engine, I jammed my finger in the prop, seems at compression when I usually flp, she flips real smooth, that time the prop stoped as I went to flip the prop, any reason why this happened, still today a few days after this, she still is tight. Any help on how to solve this would be great. Thanks Joe

You might try pulling the sparkplug out and see how it turns then. Is it inverted?

yes, the engine is inverted, I will try takeing off the spark plug, thanks. Joe