Ya it can wait For a bit! Seen em get real bad thats probly your noise! At one point in time it was a saftey issue to replace fuel lines If I were doing it To my Truck now I would re use the lines!Providing they are the updated lines. If I am doing a repair to Your truck I will replace the fuel lines as it is a liability issue for Me!You can do this repair your self!For the cost of the gaskets and the stud kit ,It will take you the best part of a day to do if your doing it your self and never done it before!It will take me or anyone thats done a few 3 to 5 hours to do,If it has any broken studs abit to alot longer. Warrenty pays 4.7 or there abouts to do it!With out complication. So A case of beer and a nice sunny relaxing sunday do it your self save 500 or more bux labour or sit at home with your feet up drink that case of beer and don't lift your butt out of the chair and let somone else do it for ya and get six months to one year warrenty your two choices! Injection lines will likly get replaced if done at a dealer.Duno what the gaskets cost!NOT MY DEPARTMENT,You need six manifold gaskets update stud spacer kit, two hot side egr pipe orings one turbo drain gasket one turbo gasket, turbo studs and nuts and lots of patience.It gets easier after about the third time around! Your call Chuck!