Thanks Chaps. Food for thought in your replies.
A few thoughts / queries to continue further;
1. Wouldn't idling initially have a similar effect to shutting the engine down until you can determine if it is spurious or not? Are you advocatiung shutting it down before idling it? If so, is there any advantage to being so quick with the drill?
2. As you chaps have experimented & had it for real, it seems a time critical drill, especially near the ground. Any thoughts on take off or landing?
Thanks again
Regards
CD