How would a clogged fuel filter affect fuel pressure?

A clogged fuel filter restricts the flow of fuel to the engine, causing a drop in fuel pressure. As the filter becomes increasingly obstructed, the fuel pump must work harder to push fuel through, potentially leading to inadequate fuel delivery. This can result in poor engine performance, rough idling, and difficulty starting. Ultimately, prolonged use of a clogged filter can damage the fuel pump and other components of the fuel system.