When it's not pumping fuel.
When fuel is not coming out.
how do you know if your fuel pump not working 1983 ford 250 an how do you change it
its not working
Do a fuel pressure check-no fuel pressure means defective fuel pump-
You will known when the fuel pump is working on the 1989 Dodge Dynasty because the engine will get fuel from the fuel tank. If the fuel pump is not working, the motor will be unable to idle or run.
how do you know if the fuel pump is not working what are some signs. my care just won't kick over i have a new battery was working then just stopped
A fuel pump pressure test could determine that.
It will not run and will appear to be out of fuel.
how do you tell if your fuel pump is working
I doubt that it would be the fuel pump relay. If it's a throttle body injection vehicle, the injector could be stuck. But you wouldn't get ANY fuel into the engine if the fuel pump isn't working. Relay can be tested by turning key on but not starting. if you hear fuel pump 'HUMM', you know pump and relay are working. If no firing at keystart and experiencing flooding, not a fuel pump issue. There is a spark issue of some kind.
probably when the pump stops working! WOW
Need to know the year and what you are working on.