Usually , the "Quadra-bog" symptom is because the Secondary air valve is opening too fast because the air door spring is broken or the door is mis-adjusted. There's a set screw on the bottom to lock it down once the proper tension is set. Good luck finding a new spring. Let me know if you find a PN and source. There's also the secondary air valve diaphragm that may be part of the problem.

Update: Here's source for the spring and adjustment allen wrench.
http://quadrajetparts.com/tools-secondary-air-valve-adjustment-hex-key-p-59.html

 

Under hard acceleration the pump itself could be bad, not keeping a proper seal and not giving a complete fuel discharge.
Most common, the carb must maintain proper fuel level for the accelerator pump to work correctly.
If fuel level is low in carb the pump will push air then fuel.
The accelerator pump is inside the fuel cavity of the carb.


Some other symptoms from a bad needle valve, low fuel pressure, improper float adjustment or bad float. All effecting the complete performance of the carb.


Just something to check.

Al

 

what he said yes also power valve may be stuck,this is more a lack of power problem tho. mabe several things added together? put in a kit but be sure to soak in carb cleaner first,these guys that add a kit without soaking parts 1st crack me up.whatta waste of money

 

thanks for the info as well, I am also having a problem with my 650 dp If I hit it after a little while it starts to bog(like running out of fuel) or the craziest thing is if I let it sit for like 5 minutes just idleing when I go to leave it boggs then stalls

 

It seems checking the accelarator pump and fuel level is the first thing to do.

 

If you are having the same problems with 2 different carbs I would look at fuel supply. Filter and /or fuel pump, lines etc.

 

Sounds to me like a bad fuel pump, I've had the situation that you're describing happen 3 times in 3 years. Every time I thought it was the carb, it turned out to be the fuel pump. $25 parts store fuel pumps tend to be pretty crappy.

 

It is easy enough to check. Pull the fuel line crank it over with the fuel line depositing the fuel into a container to check for volume and throw a gace on it to check pressure, for the pressure test re-connect the fuel line and have the car running/driving.

 

replaced the filter, and new fuel pump with regulator had the carb adjusted it is better holley electric fuel pump and regulator going back to the mechanic I now think its a accelator pump