[Rick Parker]

The tool Barry suggests is the same type as used by Porshe techs on the IDA 3c, Zeneth & Solex 3 bbl carbs. It measures the actual level inside the bowl and uses a marked glass tube that attaches in place of the fuel bowl drain plug.The issue with using it with the 48 IDA is that the float level cannot be adjusted without removing the carb top, unlike the 3bbl which has the needle & seat which can be accessed without disassembly. The Gene Berg tool is relatively inexpensive and works well. Regardless of how it is achieved, the actual level in the float bowl is the item to focus on. A very important part to improvise is item #98013.800 It is made from a piece of Clock Spring (think clock repair shop) it holds the float while using the Gene Berg gauge and measuring the tang dimension.