What is a common symptom of a clogged fuel filter?

A clogged fuel filter restricts the flow of fuel to the engine, which can lead to difficulty starting the engine. This occurs because the engine may not receive an adequate supply of fuel, causing it to struggle when trying to start or run. Insufficient fuel under various load conditions can lead to misfires or stalling as well.

While symptoms like engine overheating, increased fuel consumption, and excessive smoke from the exhaust can be indicative of other issues, they are not the primary indicators associated with a clogged fuel filter. Difficulty starting is a direct consequence of the fuel system's inability to supply the proper amount of fuel, making it a clear sign that the fuel filter may require inspection or replacement.