I installed my FP gauge about 3 weeks ago and it keeps on get louder and louder w/ the rattling. How do I get rid of this? I added a needle valve and it didnt help. I also dont have a isolator installed, would this help? And the thing too, is sometimes it barely rattles and some times it gets so loud I can hear it w/ the windows down and radio up. Any suggestions please?

 

Do a search in the forums, using the words:

Fuel Pressure
FP
Gauge
rattling
rattle
noise

you get the idea. There's plenty of suggestions on how to alleviate the problem. I had a problem a while back with my setup (using an isolator) getting pretty noisy and the needle bouncing a bit. I just disconnected the line from the top of the CP3, let the fuel drain out (into an approved container of course:-) and then reconnected it. The noise and the bouncing are gone.

BTW - if you do put an isolator into your solution, don't mount it to the firewall - sometimes the noise will resonate through the firewall metal and into the cab. I actually mounted mine to the bottom of the battery tray. It's plastic, and it doesn't transfer the sound or vibrations to the rest of the vehicle.

 

My FP gauge seems quieter now that I've installed my Air Dog pump, not sure why exactly...?

Maybe the rubber hose feeding the CP3 has something to do with it¿

 

Mine is an electrical gauge with a sending unit near the CP3, not too noisy at all. IT does bounce a little bit once in a while, but it doesn't bother me..

 

use a rubber grease gun hose inline, that helps alot too.