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 ...

At first glance, the Mustang Holley Model 4180 carb looks just like millions of other Holley carbs. But there are actually numerous differences that set this emissions carb apart from its predecessors ...