Engine/Transmission (1998.5 - 2002) Fuel pressure gauge

[bullseyejack]

WHo is running their fuel pressure gauge without an Isolater? ANY problems doing it this way? My concern is the potential for spilled fuel in the cab.

 

[Jeff Knight]

We took the isolator off of mine. The gauge wasn't accurate. We replaced it with a brass needle valve in case there are any problems. It works great. I could take some pictures if you would like. Jeff

 

[rweis]

I put needle valves on my fuel psi sensors to keep the pump from beating the sensors to death (which it did until I needle valved them).



Bob Weis

 

[keimmmo]

I have had my mechanical guage WITHOUT an isolator for about 3 years and 100k miles. Not a single problem.



Steve Keim

 

[Aaron_A]

I have never had an isolater on mine,but I do keep the brass plug in the glove box just in case.

 

[bullseyejack]

I'm not familiar with the needle valve setup? What is needed and how does it work?

 

[OL RATLR]

I have had my mechanical guage WITHOUT an isolator for about 3 years and 100k miles. Not a single problem.



Steve Keim

Same here! Oo.

 

[rweis]

The needle valve is like the one on your refridgerator water line, just a little brass needle valve you get at Home Depot.



To get a gauge to read pressure you only have to open it a very very very tiny amount. Which also if something drastic happens on the gauge side only a very small amount of fuel gets through and you can shut it off using the same needle valve.



I use it to keep pump oscillations from killing my sensors. I turn it all but off and the pulses from the pump gets smoothed out before it reaches the sensor because the needle valve is set to such a small amount of "open" that the pulses are diminished so much they do not have much of an effect.



Bob Weis

 

[bullseyejack]

Thanks for the info