Injector return lines?

[Mikeandwendy74]

Hi what would leaky injector return lines do to the running of a motor? Why would the return lines have anything to do with how the truck runs or starts? I would imagine seeing as these small lines are a fraction of the pressure and AFTER the injector they really shouldnt affect normal pop pressure yes? Mine are leaking but I thought I would throw this question out there. One more.. are the injector return lines made of something special? or just normal fuel line thats rated for oil as well? Thanks for any help.

[john8662]

Is it the lines that are leaking or the end caps on the back cylinders?

Leaking return lines won't cause issues when the engine is running.

They can cause air to enter the system causing harder starting though..

They are 1/8" ID hose, The factory ones seem to be a rubber material.

Superior lines can be purchased though..

[Mikeandwendy74]

Looks like it could be the end cap on the rear passengers side, someone before me was holding the thing on with zip ties I think I'm going to buy the replacement kit which has the new lines.