The method sounds great as long as the taste and smell of diesel fuel doesn't bother you.

One comment though. Any time you do anything significant with the IP, connect a vacuum source and apply vacuum to the shutoff valve. Once vac is applied the stop lever should move. If it does NOT move, DO NOT START THE ENGINE!!!!!!!!!!!!!!!!!!!!!!! If the stop lever doesn't move, it means that the governor is not contained and the engine will run away at max RPM.

The other precaution is to have a 17MM open end wrench in your hand when you start the engine. If the engine does run away, start loosening injector lines to release pressure to kill the engine. Don't rely on covering the air filter snout, it won't kill the engine. Been there, done that.

Good luck,