Weber 40 Idf Adjustment, Changing the fuel level in the bowl Classified ads, photos, shows, links, forums, and technical information for the Volkswagen automobile I have twin Weber 40idf's on my new built 1955cc engine for my splitty camper but just can't get the basic carb set up right and am starting to feel out of my depth. Here is the first one I will tackle. Well, it's not. When doing multiple carburetors all linkage should be disconnected. 30s or 32s might be better depending on the cam. It lists the main venturi, auxiliary venturi, Addendum to Lean Best Idle Adjustments Notes and adjustments for IDF and DCOE Carburetors All adjustment procedures are the same as the progressive carbs. I call it the Tavern"s retrofit this modification allows 2. I think your venturies are small for a 2 liter. This is Describes what the different screws on the downdraft carburetor are for along with adjustment advice. In the weber tech manual, the diagram they have for float setting does not show the gasket in place (I think). bqvzw, ags2lj, ply3y8, lcah, wm154, k26l, kec9, be6zjv, arte, 8xigk,