How to troubleshoot a faulty fuel pump in a Vauxhall Astra?

I've been experiencing some issues with my Vauxhall Astra's fuel pump and I'm not sure what's causing it. It's making a strange noise and it doesn't seem to be delivering enough fuel to the engine. How can I diagnose and fix this problem?

The first thing you should do is perform a fuel pressure test to determine if the fuel pump is working properly. If the pressure is below the required amount, it's likely that the pump is faulty and needs to be replaced.

Another possible cause of the issue could be a clogged fuel filter. Check the filter and replace it if necessary. A clogged filter can put added strain on the fuel pump and cause it to fail prematurely.

Make sure to also test the fuel pump relay and fuse. These can also be responsible for a faulty fuel pump. If they are damaged or worn out, replace them to see if it solves the issue.