I am planning on putting a fuel pressure gauge in my '06. I have decided upon the Dipricol, but need some advice:
Mechanical, or Electric
30,60 or 100 PSI

I would like to install sensor between fuel filter and injection pump. Any pointers on how to acomplish this?

 

I don't see much need for anything greater than 30 psi unless you some some HUGE hp goals later on. I would go with the electric because by the time you get an isolator you aren't far from an electric one pricewise. You can get a tapped banjo bolt from either genosgarage.com, dieselmanor.com, or glacierdieselpower.com. The tapped banjo will replace the one at the cp3 therefore measuring pressure between the filter and pump.

 

I prefer mech. , also prefer the normal pressure to be in the middle of gauge .
I do not remember what the pressure runs of 06 , maybe 15 lbs on the high side ? So the 30 would be my choice .

 

Hello,

My 06 runs between 8 and 10 under normal conditions. I like the gauge to read at midspan also but I prefer electric on fuel systems.

Damon

 

i prefer the electric for fuel also. if it were me ide go with the 60, i like to have room to grow! lol

 

Stock an 06 has 8 pounds.
I put a 30 pound DiPricol mechanical in without an isolator, tha AirDogs people are putting in give about 18-22 pounds pressure I think.

 

I ended up getting a Dipricol electric gauge, and a banjo bolt to install at the cp3. There are 2 lines that go from the fuel filter to the CP3 i assume a supply and return, I also assume I put the banjo bolt on the supply, but which one is the supply? The one closer to the front of the truck, or the one torwards the back?

 

put it on the inlet to the cp3.
that way its right at the inlet/ post restrictions. after all thats what you wat to see right? how much presure there is at the inlet, not pre filter/restriction.

 

yea, I want to put it at the cp3, but which line is it? there are 3, but I rulled out the outlet, so that leves me 2. which one do I use?

 

Take a look at my pics - there's a pic of the top of my CP3 with the FP line attached. Basically the adapter is a banjo bolt with a 1/8" NPT threaded opening on top. You replace the stock banjo bolt with this new bolt. I then ran a Autometer SS line (I think the part# is 3227) from the top of the CP3 to an isolator, and then a nylon line to the FP gauge in the cab - in my case it's a mechanical gauge.

Yeah - I've heard all of the stuff about having or not having an isolator. I'll tell you that I've had mine in place for over three years now, and no problems. BUT I did have to relocate it from my original placement on the firewall to the side of the battery tray. The original placement rattled way too much for my taste; affixing it to the side of the battery tray eliminated the noise.

I did have a problem with the gauge rattling and the needle bouncing a bit last month (1st problem in 3 years of install), but all I did was unscrew the SS line from the CP3 banjo bolt, let the small amount of fuel inside drain for about 5 minutes, and reattached. No more rattle, no more needle bouncing.

One more thing - my truck is completely stock, at idle my average FP on an average 60 degree day is 6 to 7 psi, and it's read that way since I installed the gauge. I was told initially that was an indicator that my lift pump was going out, and that was about 40K miles ago :-) On warmer days, it runs about 7-7.5 PSI, and on colder days it runs about 5.5-6 PSI.

Hope that helps....

 

Thanks truckjunkie. that was the info I needed.

 

I have a commander and would like to get the fuel pressure option. Do you guys think I should stay away from it because of the lack of reliability?

 

there has been a lot of failures in the electric transducers i think the pump pulsations are tearing them up we added a 18" grease gun hose and a snubber to ours like i do for the mechanical

 

Does that fix the problem? Can that be done with the commander fuel gauge?

 

need a pressure snubber for electrical fuel pressure gauges.