Thread: Quadrajet Overrich

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I just replaced the accelerator pump in my QJet. I used an Edelbrock plunger which has a shorter overall length and duration spring if that has anything to do with my problem. But, as soon as I started it, it was running way rich. I've gotten it to stop smoking some, but you can still see it a little. To anybody with experience, what could have gone wrong? Did I pinch the power valve open? Did the airhorn gasket not seat and I'm pulling fuel over from the float bowl?

On closer examination, it's pouring fuel out the driver's side main discharge nozzle. It's not even atomizing. Once I bring it off idle, the fuel flow matches the passenger side's and I start getting good atomization again. I didn't remove anything but the air horn. I lifted it just high enough to remove the pump plunger as I don't have access to the 1/32" drift required to remove the accelerator pump linkage. The truck is on a slight incline to the left, I may try putting it on level ground or a right incline. If the fuel problem changes banks or stops, I'll know it's the float. I didn't change anything there, but maybe.