Fuel System Problems

[phantom110]

Hey all! I'm having some serious trouble keeping my '85 C20 350's engine idling. I've got the Rochester Quadrajet, and I've tried messing with the idle screw. Since the rig was sitting for a few years, I've replaced all of the vacuum hoses and just replaced the fuel filter. As long as I keep my foot on the gas it will idle, but the minute I take my foot off it dies. Any ideas?
Thanks in advance!

 

[ryoken]

You've got a vacuum leak....

 

[4X4HIGH]

Please tell me it doesn't have the same fuel from several years ago.

 

[Bow-Tie-Boy]

Please tell me it doesn't have the same fuel from several years ago.

x2

 

[76zimmer]

ARe you adjusting the idle mixture screws or the idle speed screw?
You may want to pull the top off the carb, to check the float bowl for residual gunk from sitting so long.