Which of the following practices is NOT recommended for maintaining fuel systems?

Allowing excess fuel to accumulate is recognized as a practice that can potentially lead to various issues in fuel systems. Accumulated fuel can create hazardous situations, leading to spills, leaks, and increased evaporation losses, all of which not only contribute to possible environmental concerns but can also pose safety risks. Excess fuel may also lead to complications such as contamination or degradation of fuel quality, which can adversely affect the performance of the fuel system and engine.

In contrast, regularly inspecting hoses for wear, using appropriate fuel additives, and cleaning fuel filters periodically are proactive maintenance practices that enhance the efficiency and longevity of fuel systems. These actions help ensure that the system operates smoothly, prevents failures, and promotes safe handling of fuel, making them essential components of proper fuel system maintenance.