fuel pressure gauge?

[01sbdually]

I just put a fuel pressure gauge in and it shows the pressure pulsating. just wondered if any1 else has had this problem or know how to fix it. thanks

 

[Clunk]

Yup, the needle can wiggle so fast it'l disappear. Put a valve between the gauge and the pressure source and just barely open it to calm the pressure down.

 

[01sbdually]

what kind of valve?

 

[ClayKann101]

a needle valve i believe you can get them at napa.