What is typically a sign that the fuel pump may be failing?

Difficulty in starting the engine is indeed a common symptom associated with a failing fuel pump. When a fuel pump begins to fail, it may not be able to deliver the adequate amount of fuel needed for the engine to start properly. This can manifest as slow cranking or the engine failing to start altogether. In some cases, the engine may start and then stall after a short period if the fuel pump continues to provide insufficient fuel.

Increased engine noise can signify various problems, but it is not exclusively linked to fuel pump failure. While a fuel pump might become louder if it's struggling to work, other factors like issues with the timing belt or alternator could create increased engine noise as well.

Navigational issues are typically unrelated to the fuel system; they are generally associated with the vehicle's electronic systems or the navigation system itself, rather than the fuel delivery process.

Flashing dashboard lights often indicate warning signals about various systems within the vehicle, but they are not a direct indicator of fuel pump failure. Such lights could signify electrical issues, engine performance problems, or even transmission concerns, which do not specifically point to the fuel pump's condition.

Therefore, difficulty in starting the engine stands out as a clear and direct sign that may indicate fuel pump issues, as it