Quadrajet

[GUITAR1989]

My truck has been having some trouble when i fire it up. it starts up but within a few seconds it dies...if i fire it up and give it some gas for about 10 secs i can let off and itll idle fine. I dont know much about carbeurators but i was just wondering if anybody could help me out. the carbs a quadrajet and i read that if you get them dialed in just right they can be great carbs. im sure you guys know how to fine tune these little devils and id appreciate if you would show me the ways of the quadrajet.

[eventhorizon66]

Does it do this only when cold, only when hot, or everytime?

[GUITAR1989]

well ive only had it for about a month and its been killer weather recently so i havent tried starting it up when it is cold yet.

[eventhorizon66]

No.  Sorry.  I meant when the engine is cold or hot.  What I'm getting at is it could be a choke issue.

Have you checked for proper choke function?  When the engine is stone cold, the choke blade should be closed with a slight bit of spring tension holding it closed.  As soon as the engine is started the choke pulloff should crack it open a bit.  Perhaps the choke isn't closing or maybe the pull off is opening it too much (it's adjustable).  Also maybe you need to bump your high idle speed up a bit.  

Do you depress the throttle before attempting to start it? That will close the choke blade (either partially or fully depending on temp) and squirt a bit of fuel from the accelerator pump, easing starting.

[GUITAR1989]

ahh right on ill mess with it.

[eventhorizon66]

Update?  Did you get this problem sorted out?

[GUITAR1989]

yeah man sorry to leave you hanging..."Do you depress the throttle before attempting to start it?" the answer was no lol but you were right on the money....fires up like a bat outta heck every time now! thanks for the tip man. This truck is my first classic and im learning all i can about it. thanks again man

[eventhorizon66]

Glad it was something simple.