What is the vacuum diagram for a 1990 ford f-150 inline six?

The vacuum diagram for a 1990 Ford F-150 with an inline six engine illustrates the various vacuum lines and their connections to components such as the carburetor, brake booster, and emissions controls. Key components typically include the vacuum advance on the distributor, the EGR (Exhaust Gas Recirculation) valve, and the canister for the evaporative emissions system. It's important to refer to a specific service manual or diagram for accurate routing, as incorrect connections can affect engine performance. For exact details, consult resources like the factory service manual or specialized repair guides.