acceleration stumble

[deathcharger71]

i get a bad stumble when i get on the gas for about 2 seconds then it runs like a bat out of hell. its worse from a stop, but always does it when i give it gas quickly. im running a 650 double pumper, from what ive read its running to rich at idle? or maybe just too rich in general. how could i fix this? the guy who tuned up my car when i had the charging system checked claimed that it was loading up and im just gonna have to live with it, but ive had it running without loading up before so i know its possible to fix....

[dodge freak]

Sounds too lean-accelerator pump problem, your carb. has 2-one in front and one in back. Sounds like it could be the back one, when the motors cold, so you don't flood it- take the air cleaner off and open the throttle all the way by hand, you should see gas coming out on both sides -front and back- if so its ok but sometimes you have to change the pump cams but if it was ok that should not be it. Pumps do go bad but not offten.

[Chryco Psycho]

makes Sure there si no play in the linkage , if there is it will bog , there should be a squirt the instant the throttle blades move
you may need a larger squirter if there is no play in the arms

[deputycrawford]

Also check things like the idle screw position. If you are using too much of the idle screw then you are running on the main circuit. A double pumper is not known for that, but it helps to check everything. You may have to change the idle curcuit and then start to tune.