97ramctd

I hooked up my fuel pressure gauge and when the truck is running it fluxuates really bad evryone tells me theres something i can put on it to stop it from doing it. Anyone got a clue what that may be? Lol i'm asking what it is now that i have already broken the needle off of my gauge so now i have to buy a new gauge and this thing that'll fix it.

crobtex

Did you put a needle valve between the gage and the line to reduce and control the pressure to the gage? It doesn't take much to get a correct fp pressure reading.

97ramctd

no i just hooked the line to the gauge. so i need a needle valve to get it to not fluxuate so bad?

Dr. Evil

Yes, a needle valve (barely open), or a pressure snubber (you can get that from www.dieselmanor.com) will dampen the pulses. Without either of these items you will destroy your guage ...

97ramctd

lol i found that out the hard way.

crobtex

On a '99, it will look like this:

Mopar1973man

Here is my old setup with the stock plumbing with a needle valve...



Here is my new setup with Vulcan Big Line Kit, Low Pressure switch and needle valve...


Either case it will stop the wild needle and buzzing in the gauge...

TxDiesel007

i have a setup on a 12V

here is what i did...I dont have pics of my setup, but this is how i actually ran it. i used Infidels exact procedure and followed it almost to the T. BUT since my gauge came with the isolator i ran it to the isolator (DO not do that, save ur 129 dollars)

I went ahead and tapped the banjo bolt and hooked the needle valve to it directly. I permatex'd it directly and although it wound up upside down, it works well and suits my needs. From that connection i ran the stainless steel hose to the isolator which was mounted on the fender close to the brakes. From the isolator i used oil pressure tubing straight to the cab gauge and it wound up on the middle pod in my triple.

Now when i learned that the isolator does not work, or swapped it out, i went and found a dual male connection, and connected the stainless steel line to the tubing line and ran fuel directly. I have had no issues with this setup, Although if u want this can be a temp setup and u can just have a gauge under the hood. In either case PM me for more details if the need arises...

Rick