I have an adjustable one so should I just turn it in more so it takes more pressure to work it?

Ya,just adjust it and if that doesn't work,lift pump is probably bad or on its way!:td:
How many miles you got on her?

I replaced the lift pump in march so its not even a year old yet.

I would put money down that its low fuel pressure!
Easy fix though!:yeah:

Your lift pump, mine did the same thing. Then I had to replace the new lift pump because it was faulty.

Just try to adjust the valve 1st then go to option 2!:tu:

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He just said he replaced it not even a year ago.i'm pretty sure its not his lift pump!
To much fuel returning to the tank!:tu:

Right now I have crappy glowshit gauges in but I ordered some new ones so I will try adjusting it when I get them put in.

Ok I got my new gauges put in and my fuel pressure seem to be ok so do you still think it might be the lift pump causing the noise?

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No one has anymore input?

You know that the lift pump will cause some line surge right? And that if the lines are touching they'll make a click or knocking sound. We've had to address a tick caused by fuel lines hitting together or against something under the bed in the past. Return line was a common noise maker and quick connects often caused a tick. Overflow valves when responsible for a tick often allowed irregular pressures or surging pressures. Might check the lines before continuing and honestly if the lift pump is still making good pressure I'd leave it be.

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I know the fuel pressure will drop under a load but how low can it drop and still be ok?