Car was running pretty good but bogging when I stepped on it. I saw the pump was only squirting into the left horn. Gaskets were toast so I did a rebuild. The only snag was when I dis-assembled the StepUp assemby (with the metering rods), there was a piece of seal or gasket stuck on the spring. The kit diagram shows a gasket (31) but the piece that was on the spring was thicker than the o-ring style shown on the drawing. Below is a pic of the parts. There was a piece in the kit that seamed to match but looked like cork. When I tried that, it seated nicely and didnt catch on the spring. Yet another piece seemed to fit the cylinder end but wouldn't fit in the hole easily. The o-ring went in ok but immediately caught the spring. The closest video on YouTube showed one guy not putting anything and another guy using the o-ring. The original was obviously done so I don't know what difference it makes. I was most comfortable with th e cork piece as it stayed and seemed to match the original piece but my concern was that the cylinder didn't go down as far with that in place. In the end, I left it out and finished the carb.
I started the car and it runs smooth but much too fast on the idle. I see what seems like an idle screw but it doesn't come near to a surface to make a difference(that seems strange) I just don't see any adjustment beside that screw. I checked the linkages and any sources of binding.... even disconnected the pump and the choke. Seems as though the throttle just doesn't go to a low idle even if I push to the farthest. I did note that when I was re-assembling the throttle body, the butterflies don't close all the way (maybe 1/8th to 1/4 inch open) but assumed that is normal. When I reference pics, everything looks the same as before. I know the mixture ports are sealed. The air bleed screw on the back doesn't make any difference.
It seems this is a Carter ABD according to the tag 4578s and all the info I can find is for BBD. Looks like tons of versions all very similar.
HELP PLEASE
I started the car and it runs smooth but much too fast on the idle. I see what seems like an idle screw but it doesn't come near to a surface to make a difference(that seems strange) I just don't see any adjustment beside that screw. I checked the linkages and any sources of binding.... even disconnected the pump and the choke. Seems as though the throttle just doesn't go to a low idle even if I push to the farthest. I did note that when I was re-assembling the throttle body, the butterflies don't close all the way (maybe 1/8th to 1/4 inch open) but assumed that is normal. When I reference pics, everything looks the same as before. I know the mixture ports are sealed. The air bleed screw on the back doesn't make any difference.
It seems this is a Carter ABD according to the tag 4578s and all the info I can find is for BBD. Looks like tons of versions all very similar.
HELP PLEASE
