What can a partially blocked fuel filter cause?

A partially blocked fuel filter restricts the flow of fuel to the engine. When the fuel filter is impeded, it results in less fuel reaching the engine's combustion chamber. This reduced fuel supply leads to a lean fuel mixture, which means the proportion of air to fuel becomes higher than what is optimal for combustion. A lean mixture can cause various performance issues such as hard starting, poor acceleration, and engine overheating, which can ultimately affect engine efficiency and power output. Thus, understanding the role of the fuel filter in maintaining the appropriate fuel-to-air ratio is crucial for engine performance and functionality.