What is the best way to diagnose and fix a leaking fuel pump in an Audi 80?

I recently noticed a strange smell of gasoline near my Audi 80 and upon further inspection, I found that the fuel pump was leaking. What steps should I take to diagnose and fix this issue?

The first step is to locate the source of the leak. It could be a damaged seal or a crack in the pump itself. Once you have identified the source, you can either replace the affected part or repair it with a sealant.