This is a technique frequently used in an attempt to locate GVs in game. In a combat situation this would be a less than ideal thing to do since, there is a chance the engine may not restart. Additionally, the aircraft is slowly descending and/or airspeed is decaying. Both are a distinct disadvantage in a situation where survival should be the number one goal.
So, when the engine is intentionally shut off, how about the engine randomly not restarting?