I just finished doing both sides head gasket on my TT Z. I believe you are talking about leaking fuel rail hose. You would have to take off the Platnium and then the lower intake manifold to get to it. If you have money save up I would suggest you buy a new fuel rail. Also change out the detination sensor while you have it out. The fuel rail is connected together by a short hose from the front that's why you are getting a fuel leak from under the fuel throttle. Let me know if I can help you with anything else. I work on Z cars and pretty much know what to do.