Hi My Mk2 VR6 has got a fuel tank from a Mk3 VR6 in it. I've notice that there is pressure in the tank when I take the cap off, I think i've traced to the pipe that would have originally gone to the carbon canister being blocked, I just need to make sure I unblock the right one. How many pipe are there on the fuel tank? Mine has the feed, return and another one that appears to be black which is currently blocked, is this one that needs to be unblocked? Any help would be appreciated. Cheers, Bruce