I have been trying to get my new edelbrock 1406 carb tuned right for a while now. I have been messing with the idle mixture screws and finally got them right. Using a vacuum gauge, i back the screw out until i achieved maximum vacuum without going any richer, then turned them back in 1/8 of a turn. Well, by the way the exhaust looks and smells, and from watching my air fuel gauged, it still seems to be running rich. Would the floats have anything to do with this? Or do i need to look into some metering rods?

 

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Checking the float adjustment is the first thing you should do when you take the carb out of the box.

 

Well being new to the carb world, i didnt know that. Could improper float adjustment ccause it to run rich?

 

It could, if the floats are so high that the bowls are overflowing.

 

Great then i will check that out. Thanks for all your help!