How do you test an electrical fuel pump on an Opel Ascona?

Fuel pressure test. First thing to do is replace the fuel filter. If that does not help, then test the fuel pump with a fuel pressure tester. If you can't hear it run for a few seconds when the key...

Unless you have a factory service manual that has the pin tests in it you cant. Just go get a new one usually less than ten bucks and it would also definitely eliminate the relay. Good luck. Brad.

Take the fuel line off of the engine and see if fuel comes out when you try to start the vehicle to see if it is working. If you need to see if it is pushing out the right perssure then you will have...

Fuel Pump Pressure Test Look at the Related links below for help.

You can put 12V across the terminals and see if you can hear it. Or do you mean check the flow pressure, in that case you really need to connect a pressure guage to the fuel line.