Carbureted starting procedure

[05crewcab]

Hi guys,

I don't think my truck starts like it is supposed to. Here are the rough procedures depending on when I am starting it:

After sitting 10 hours to 10 days: Pump pedal once and it fires right up

After sitting for 5-10 minutes and warm: No pump, fires right up

After sitting for more than 10 minutes and less than 10 hours: Hold the pedal down while cranking and then it fires up.




The last part concerns me. I would think I should have to pump it once or twice to get it to start and not have to hold the pedal down. The engine is a 350. Edelbrock 1406 carb (with a 1" riser). HEI ignition. FWIW, I have a clear fuel filter and after it sits a while there is no fuel in the filter. Normal?

Anyone have any ideas and or how do you start your trucks? Maybe I am just crazy...

Thanks