What happens if you have a bad fuel pump?
What happens if you have a bad fuel pump? Car Will Not Start. Another more serious symptom of an issue with the fuel pump is a no-start condition. If the fuel pump fails completely — to the point of not being able to provide enough fuel for the engine to run, the vehicle will refuse to start. How can I tell if my fuel pump is cranking? Get under the truck and see if you can figure which wire powers the pump and check it with a volt meter or a test light to see if it is getting power...