My 5 year old Edelbrock AVS 800 Thunder has developed a off-idle- and idle-to-WOT bog I can not tune out. I checked the pump shot and found that the throttle has to be opened some before it squirts. Shouldn't the pump squirt immediately when the primairies start to open?
The pump diaphragm has no obvious damage and the spring and ball under the squirter are ok. There is tension to the pump at idle.
It idles smooth with steady vacuum.
The carb is clean and the car pulls strong other than this bog. It used to run good with the same settings before.
Any ideas? Do the diaphragms tend to go bad this early?
