* Increased pressure: A clogged filter restricts fuel flow. The fuel pump has to work harder to push fuel through the restriction, leading to increased strain and overheating. Over time, this extra stress can damage the pump's internal components and shorten its lifespan.
* Cavitation: If the restriction is severe enough, the pump might start to cavitate. Cavitation occurs when the pump tries to pump air instead of fuel, creating bubbles that can damage the pump's internal parts.
Think of it like this: a clogged filter is like making your fuel pump work out intensely every time it runs. Eventually, that constant overexertion will wear it down.
So, while a clogged filter isn't the sole cause of fuel pump failure (other factors like age, wear and tear, and electrical issues also play a role), it's a significant contributing factor that can accelerate its failure. Replacing a clogged fuel filter is a relatively inexpensive and easy preventative maintenance task.
