Engine lags and stalls when initially pressing gas-Solution Found?!

He is in the driveway now, 90 degrees, and frustrated.
HELP
Well, when I was young; 90s was not too hot to change; engines, transmissions or rearends; try not to show too much compassion,lol. Heck, I rebuilt my first engine in Mums chicken-coop, and I swear the thing was an oven.