nah mate, that is your "fuel damper"
you can only hear it from the inside of your car right? not from the outside?
and it seems to be coming from behind the dash right?
if you put your hand on the fuel damper in your engine bay you will feel it shake, that is the cause of your problems.
I had this exact same problem and got it fixed, new damper cost about $90....easy install just gotta jack the car up.