How to diagnose and fix a faulty fuel pump in an Audi 80?

I have been experiencing issues with my car stalling and difficulty starting. I suspect it's a problem with the fuel pump. How can I properly diagnose and repair this issue?

To start, you can check the fuel pressure and listen for any strange noises coming from the fuel pump. If it's below the recommended pressure or making unusual sounds, it's likely to be the culprit. As for fixing it, you can replace the fuel pump yourself with the proper tools and instructions, but it's also recommended to seek professional help if you're not confident in your abilities.

It's also important to make sure there's no blockage or clogging in the fuel lines before assuming it's the fuel pump. You can use a fuel line cleaner to see if that resolves the issue before considering a replacement. And always remember to relieve any fuel pressure before working on the fuel system to avoid accidents.