Noisy Fuel Regulator

Quick question (I hope). The fuel regulator on my 99 Sprint 955 is noisy when the engine is running. Now is it because the tank is almost empty - there is less than 1/2 gallon in it - or will it be noisy whatever? Do I need a new one or not?

 

Its this part;

 

That looks the same but Im thinking I will wait until I have the rest of the bike sorted, after all it runs!

 

DD you could be right. Something to think about for me! Although I have found the regulator for £20 posted on flea bay with the correct part number. Do I replace the pump or just the Reg?

 

No it wasn’t a lecture just a well balanced argument. As always! Plus that did cross my mind after I posted - perhaps I should pause before posting!

 

TBH that seems to have happened already! I always welcome advice no matter how small or silly it seems. As I always used to say to my candidates the only stupid question is the one you don't ask!