hi all. i need some help. i have a fuel leak.i could smell petrol from inside the car so i popped the bonnet. On inspection i found the part it was leaking from. it is a small silver disk shape part.it has a really small pin hole leak.its so small i could only see it because it was spraying against something.The main fuel pipe runs into it then the other pipe from the other end runs into the engine. i got a mechanic to take a look. He says its the fuel pressure regulator. Ive looked on the Internet and fuel pressure regulator looks nothing like what i have. can any one confirm what it is. My car is 2.2 direct 05 plate.