[chipflyer]

You have found your problem if you are not getting a squirt from the accelerator pump.
Take the airhorn back off and re-seat the checkball. Do this by taking a small punch and lightly tapping the ball with a small hammer, not to hard, just a tap. After re-seating it fill the checkball cavity with wd40 and see if it leaks down, it should not. Make sure the accelereator pump moves up and down in the bore without sticking, the seal can actually stick and the shaft still go up and down. The photo is of one I am building that had Ethanol run through it, it destroys the accelerator pump seal.
Here is a link to Cliff Ruggles very good quadrajet forum, you might ask over there if you still have trouble.
http://www.cliffshighperformance.com...machinesforum/