IIRC that blue plug is the noid for pulsing the metering needles.

IIRC I have a carb in the shed that is apart. i will go take a pic of the inside of one.



dog,the edelbrock 1905 were new casting to start with.it works like no other q-jet I have had. the choke works,its not worn out, and it was FREE!!

wow! what a kick it has on the 440 over the 600 eddy carb.