What are the symptoms of a faulty fuel pump?
2 Answers
Symptoms of a faulty fuel pump include: 1. Weak acceleration with a jerking sensation when accelerating suddenly; 2. Difficulty starting the car, requiring prolonged turning of the key; 3. A buzzing noise while driving; 4. The engine warning light turns on; 5. The engine experiences shaking. The main causes of fuel pump damage are poor fuel quality, not refueling in time, and not replacing the fuel filter for a long time. A severely clogged fuel filter in the fuel supply system makes the fuel pump work harder, leading to damage due to prolonged high-load operation. It is recommended that car owners refuel promptly and choose reputable gas stations to ensure fuel quality and prevent damage to the fuel pump.
Last time my car's fuel pump failed, the most obvious symptom was extreme difficulty starting the engine. The car struggled to start when warm, and after a few minutes the check engine light came on - that's when I knew something was wrong. While driving, I also noticed significant power loss - acceleration was sluggish like a crawling snail, with no pep at all, even small inclines became challenging. Sometimes at red lights, the engine would suddenly stall and require tremendous effort to restart. I also heard a distinct whining or hissing noise coming from the fuel tank area, especially noticeable when parked in quiet locations. More annoyingly, there were several instances of sudden stalling during short trips, forcing me to pull over for inspection. This situation was particularly dangerous on highways, so I immediately took it to the repair shop for fuel system diagnostics. The mechanic suggested possible causes like a clogged fuel pump filter or pump wear. My advice: regularly replace air filters and avoid using substandard fuel to prevent such issues.
