What is the consequence of not maintaining the fuel filter?

Not maintaining the fuel filter can lead to debris entering the engine, which is a significant issue. The fuel filter's primary function is to prevent contaminants and impurities present in the fuel from reaching the engine. If the filter becomes clogged or is not properly maintained, it cannot effectively restrict these particles, allowing dirt, rust, or other debris to flow into the engine. This can cause serious damage over time, leading to reduced performance, increased wear on engine components, and potentially resulting in engine failure. Thus, regular maintenance of the fuel filter is crucial to ensure optimal engine operation and longevity.