Where is the petrol filter located

Hello, The fuel pump, fuel pressure regulator and fuel filter are all the same part. When you replaced the fuel pump assembly, you should have been given new o-rings for the fuel lines and a new large o-ring for the fuel pump-fuel tank mating surface. If the old o-rings were not removed and replaced with new, you may just be sucking air into the lines, or the fuel tank is not sealed. Scan for trouble codes, and let me know if you have any stored.