"One-way" fuel line valve..?

I am 61 years old and have owned a lot of carbed - US and european - cars in my life.
None started the same way and I had to find the best procedure to start (hot or cold) for each one.
But with modern injected cars which start immediately, we got bad habits.
I probably forgot that carbed cars are capricious :p

Anyway, if a forum member who own a fully stock slant-six 1bbl carb can share his cold starting exprience, I'll be glad to read him

:thankyou:all

Lol, I'm 73, owned a 4 bay service center in our Capitals city center..
We'd go thru 20 - 40 vehicles a day. Every conceivable make, - every conceivable problem.
Over 40 yrs I've started and driven just about everything numerous times.
That's the way I start any carbed vehicle, read the manual, and it worked for me, - that's just my experience, day after day.
Good luck.