@jasmits sorry i dont have understand your last message that was not against you, i really dont speak good english, soo sorry when i dont have give you the right answer.do you mean what is the technical reason why its will flooded with mix on rich?? its the specific lycoming injection system that works different from the continental injection system or carb engines. But i cant explain you more details about that, but you will find technically descriptions online of course, i am only a pilot not an aircraft mechanic, for me it is not soo important to know any specfic system works technically in any little detail. is that what you want to know? sorry again when iam wrong
Kind greetings from Brasil.
and if you have any other questions feel always free to ask me, i try my best to answer you!