https://www.lycoming.com/content/tips-start-your-engine
"
Lycoming engines of more than 118 HP have a throttle pump which can be used for priming under moderate ambient temperature conditions while turning the engine with the starter."
Lycoming says it's ok and it works very well. Don't knock the technique if you have not actually evaluated it.
Last edited by EXDAC; 1st Dec 2021 at 20:37.