Quadrajet secondaries don't open

[jamesF]

On my quadrajet when I am operating the throttle with the engine idling,  the secondaries don't operate. Is this by design?

Thanks
James!

[comp]

i beleve so,,mine don't

[jamesF]

Thanks Comp. I appreciate it. I guess you need a change in vacuum to get those open.

[comp]

Thanks Comp. I appreciate it. I guess you need a change in vacuum to get those open.

 ya i think so,,got to learn more and build a few for my cars and trucks

[cliffq]

Not to Plug Cliff's stuff,, but..  You should get his book. It is totally step by step. And you can get cheap cores to rebuild pretty easily.
It was surprising that the Vacuum wasn't there at idle at first. But it makes sense now. The car has to be under load..

[comp]

Not to Plug Cliff's stuff,, but..  You should get his book. It is totally step by step. And you can get cheap cores to rebuild pretty easily.
It was surprising that the Vacuum wasn't there at idle at first. But it makes sense now. The car has to be under load..

 its on my to buy list 

[sep455]

Are you referring to the throttle blades or air flap? If its the top air flap, then you can adjust the tension spring. Its in Cliffs book.