What are the usual symptoms of a broken gasoline pump?

What are the usual symptoms of a broken gasoline pump? Oil pump seal manufacturers share the following points for your reference:

1, weak acceleration, emergency refueling azole car phenomenon.

2. It is difficult to start the machine, and it takes a long time to type the key.

3. Abnormal sound, there is a buzzing sound when driving.

4. The engine failure light is on.

5. Abnormal engine jitter.