How would you diagnose a failing fuel pump, and what symptoms would you expect to observe?

How would you diagnose a failing fuel pump, and what symptoms would you expect to observe?

• A. No-start or intermittent starting; check fuel pressure with gauge; listen for pump; inspect harness and relay; verify electrical supply; replace if necessary
• B. It makes the engine louder
• C. It increases horsepower
• D. No-start or intermittent starting (typo)

Answer: (A)