Shovelhead

http://www.grainger.com/Grainger/pro...835462&ccitem=

infidel

Check with a refrigeration shop, 1/8" needle valves are commonly used on ice makers. Grainger will ship to Guam if it comes to it.

jrs_dodge_diesel

Thank you Ed and Bill. I'll post an update after I get a new valve ordered and put in.

Jim Lane

Need to try and find a good glycerine filled gauge with a snubber that will fit a 2 1/16" hole, they are dampened against needle vibration. Graingers sells 2" ones you could adapt.
BTW what is the pressure range?
Jim.

jrs_dodge_diesel

Of my guage? 0-30 psi.

slim51015

I have the same buzzing too. I am going to drain a little fuel from the
gauge line and leave some air in to act as a cushion.

Jim Lane

What size line are you using and do you have any kind of a snubber inline or are you just using the needle valve. If you have access to any HVAC supplies you could make a sutable snubber with about 6" of small bore capillary tube with fittings brazed on the ends. This would dampen out any pulsations. Use a tube with a ID around 5 thousand's of an inch.
You could also use a fixed orfice used for refrigeration applications.
The fuel pressure gauge I had on my mustang used to do that back in the 70"s, it drove me nuts because at first I could not find where it was coming from. The needle would chatter between the stops. It cured itself when I installed a rotary fuel pump and it just snapped the needle off.
Jim.
Did I loose all of you?

infidel

TST recomends using an inline fuel filter for an air dampener. I tried one, installing it at the high point of the line. Worked great for a couple thousand miles before filling with fuel, at least it was clear and I could see it happening. I think any line will eventually fill with fuel.
Went to a needle valve, no more problems.

RAM2940

If you are using a ss braided line from the test port to guage you need to add a rubber fuel line as a snubber about 2ft long. The ss braided line is transmitting vibrations into the guage. My isspro fuel guage did the samething. I also have a needle valve inline and no matter how much i closed it it would not stop the vibrations. Find a piece of diesel rated or hydraulic line and put at the test port. This fixxed the vibrations on my guage.

stonewalldiesel

I had the same problem, I still have the sending unit inline with a control valve on and it rattled like a Texas rattle snake. I tried closing the valve but made no difference so I called PDR where I bought the gauge and they replaced the gauge on warranty. I have to say that PDR is with out a doubt a fantastic group of people that back there products 100%. I did notice since replacing the gauge that while I'm driving on the Hwy at 100K's the the gauge actually builds pressure??? I'll start off at 13-14 PSI and after 15-20 minutes it will build to 16 PSI is this normal????