If there were a category titled Good Carb, Bad Reputation, the Rochester Quadrajet would be at the top of that hit parade. It's doubtful there is a domestic fuel mixer more universally misunderstood ...

2 Remove the primary float bowl from the front of the carb and, from it, remove the components shown in the photo. Inspect float for pinholes and replace if any are found. Soak bowl in cleaner, rinse ...