Fuel pressure guage

[CAROLINA CUMMINS]

Howdy





I'm planning on getting Boost and pyro guages for my rig in the next month or two. should I get a fuel pressure guage too??



Thanks Steve

 

[michigandon]

Can a fuel pressure guage be installed on one of these engines? I need to find something to install on my dashboard in place of the now-defunct Isspro tach, and I think it would be nice to see when it's time to change out the Racor, although I can already tell that by the change in the exhaust note.

 

[Greenleaf]

Change in the exhaust note, eh? Does it like, get REAL quiet, Don?





So yeah, you can. Pretty simple too. What I did was to install the updated/replacement/aftermarket banjo fitting (w/the 1/8th inch pipe fitting)



I bought a box full of 'em to install onto the bus fleet so I would have a test port in which I could test fuel psi.



I installed mine inplace of the factory bleeder screw banjo. The fuel gauge sensor (or hose and gauge for temp install only) will thread directly into this new banjo,



Cool huh?



When you have a modified pump..... and @ WOT... . the fuel psi needs to be monitored as you can find you'll be runn'n low on fuel supply



I'm thinking too u could use it as a diognostic tool too... ... ... ... ... ... Bad pump/resriction etc. etc.





GL



BTW When I think of Banjo fitting. . ... ... I see Tugboat Phil. No shoes,straw hat,rocking chair on front porch,bibs,foxtail clintched between the teeth,hound dog @ his feet... ..... and a Banjo. :-laf :-laf

 

[michigandon]

Actually, it kinda changes from a drone to a burble. And then you start slowing down. Happened to me twice now.



Scott, could you possibly provide me with the p/n for that banjo fitting?



Thanks,

Don

 

[bgilbert]

Scott, yeah and more details of the install please

 

[Greenleaf]

Well, to keep things like real simple ... ... ... ... do the following.

Call Geno's Garage and tell them you want the new banjo fitting w/1/8" pipe and it woud be a good idea to have them include two of the sealing washers. While your at it, get four of them seals and remove the banjo fitting just below the previously mentioned one and drill out the restrictive passages in this fitting as well. Use the remaining two seals on this banjo for a leak proof task.



If you don't like Geno's call Northwest Fuel Injection;

Columbus Grove OH @800 686 3923



Mentone IN @ 219 353 7781



Blissfield MI @ 800 771 3835



Tell 'em you need the fitting and seals. I have part numbers but they ain't needed in this situation.



Happy hunting,



Scott

 

[Greenleaf]

OK OK.



I'm getting PM's on this so will post this here one time for all.



There is no big mystery here. Use the electric gauge. Geno's has them listed in the cataloge. You don-wan-to run a live fuel line into yer rig to power a mechanical gauge.



PDR also has the Isspro electric with the mechanical sensor thingy. This route is like way- more $$$. They don't sell the same gauges as Geno's, but you guys can choose which route best suits yer needs.



Scott

 

[JLEONARD]

I think it would be nice to see when it's time to change out the Racor

Don, in the marine applications, we put a vacuum gage between the Racor and lift pump to monitor the condition of the Racor.

There is also a kit you can buy to mount a vaccum gage into the top of a Racor 500/900 series filter... it replaces the T handle on top.

Or you could simply put a T fitting in the line and run the vacuum gage off that.

E mail me if you want more info on the vacuum gage.



-- email address removed --



Jay

 

[michigandon]

Ok, so is THIS what I'm supposed to be looking for?



http://216.167.41.9/CoastalData/showdetl.cfm?&DID=30&Product_ID=593&CATID=1

 

[JLEONARD]

I don't know, but here is what the vacuum gage looks like that is used for marine apps.



http://boatdiesel.com/404Page.cfm?UN=1097242735828

 

[bgilbert]

I'm still cornfused. Isspro electric with mechanical sensor? Will this one run fuel into the cab? Geno's shows a DiPricol fuel press gauge kit ~$129, PDR kit ~$129 for Isspro?? What bolt do we remove to install the banjo bolt, c'mon Scott, draw me a picture lol. ??? I might have come up with a banjo bolt while at the junkyard laying on top a 5. 9 p-pumped out of a Ford app. Its tapped, I plugged it with a 1/8 pipe plug. It looks big though, not sure which bolt we remove duh, help. .

 

[michigandon]

Yeah, I'm scratchin' my head on this one too! I thought that the fuel PSI kits sold by Genos and Piers were strictly a 24V thang. Isspro lists a 100 PSI electric fuel pressure guage on thier website for $38. Does this banjo bolt go into one of the lines to or from the injector pump?



I can drive to Northwest Injections Blissfield store and pick up the stuff I need in person. But Great Lakes International is a LOT closer to home. I find it hard to believe that all I gotta do is walk in and ask for an "updated banjo fitting" and they'll know what I'm talking about.

 

[Greenleaf]

ROFLMAO





You guys. :-laf Ok where do I start???

I think you guys are thinking like, way to hard on this one ... ... ..... "Can't see the forrest because all these trees are in the way" kinda thing.



I don't want to get the PM from our good Pastor cause I was recommending who to buy part(s) from and who has the best prices sorta thing. There is a very fine line there. So what to do??????



OK... ... You look in the cataloge we get w/our TDR magazine. Then look in the area of gauges. Then you order that 16 OR 30 psi fuel gauge which includes the sending unit for like $68. 00 (I don't have the cataloge before me so cant give part number or exact price, sorry) While you have this particular organization on the phone, you say... ... . " Give me the pipe tap banjo fitting for the 24 valve trucks and throw in a package of them little seals along with it pleez".



When the brown truck pulls up in your drive-way,,,,,,, sign for said package. Remove the contents. Open the trucks hood and remove the upper banjo fitting. It has the bleeder screw threaded into the banjo bolt head. Install two new seals onto the new pipe tap banjo and secure it. Your new gauge will have a sending unit that is placed into this new banjo. It's electric, so you will have to hard wire it.



With our trucks instock form, a 16 psi gauge will work ok. You will see somewheres about 10 psi to four on the low side. If you are bgilbert and installing a super tuned VE your bud has set up for you,,,,, then you'll soon find a pusher pump is gonna be in the works so I'd opt for the 30 psi unit hint hint



All in all you will have about $100 invested shipping included. Where are you guys getting this kit idea from



There is a gauge company that starts with the letter "I" that does have a fuel psi gauge. It, however, has proven to be big $$$ and unreliable. They say they are working on bringing out a new model to replace the unit of past.



100 psi fuel gauge!!!??? WOW,,,,,,,,,,, What would you install this on??????????????? John Force may have one but you won't





Scott

 

[michigandon]

Ah hah, so you CAN install a fuel pressure guage on a 1st gen rotary pumper using the 24V stuff from one of the aftermarket vendors.



Why didntja just say that to begin with?

 

[Greenleaf]

OH, sorry...



Yeah, use the same stuff the 24 valve guys are using. Was that mentioned? Sorry again, I missed that comment/question somewheres back.





-S

 

[bgilbert]

PDR kit

I'll second what Scot said. I ordered the 24V isspro fuel pressure kit from PDR, comes with everything you need. And yes Nascar Mark the banjo bolt in the kit fits quite nice, he wasn't sure if this would work on a 12V. There is an 'isolator' you fill with antifreeze, live fuel goes from banjo bolt to this small box thingy- isolator, then antifreeze runs out of it to the fuel pressure gauge,- I'm assuming... Haven't installed yet, but have installed the banjo bolt. Also don't call the other vendor for a banjo bolt, and washers as I did, they are included in the kit. Now I have an extra bolt and 4 washers. Ordered a single gauge pod from Geno's, I'm gonna stack it on top of my dual pod on pillar. This way my isspro boost, pyro, and fuel pressure will be on pillar, 3 3/8" tach next to them, then , 3 autometers on dash to the right.

 

[michigandon]

Hey Bill, any chance I could see some pictures of your installation?



Thanks,

Don

 

[Greenleaf]

I have been reading over on the 24v forum... . I have 9 of them here and always looking for tips etc. on keeping these babies on the road.



It would appear that those guys are having a tough time getting the isolator type fuel gauges to work and keep working. That is why I suggested installation of the electric gauge. However you guyus are welcome to install whatever you like. Mine is electric, but have yet to install it



-S

 

[bgilbert]

I also have done my research, via the search feature, and seemed like many guys were having isolator problems, some ran fuel straight to the gauge in the cab with no problems etc. I decided against the isolator. After reading about all the mechanical oil pressure gauges OTR trucks and members have/are running with no major problems, I said heck with it, and ran straight to the gauge. I did run the fuel tubing through some aquarium air line tubing so it would help from getting scrapped or cut. Got it that way from banjo bolt to gauge. An idear for yalls, would be to plumb a shutoff valve on underhood side of tubing in case of fuel leak at the gauge. First step would be shut off truck, no fuel will pump to gauge. Then turn off valve at shutoff 90 or whatever, continue running till you get the leak corrected. I didn't do this, I'm a gambling man, knock on wood, got things hooked up, ran the truck for some time, didn't see any leaks, so I'm running it. Super simple install if you wanna run live fuel to gauge, slightly different than oil running to gauge, but diesel fuel isn't as volatile as gas or something. BTW you might just find out you need a new lift pump. I'm running 3. 5-4psi at idle, very quickly to ZERO with slight heavy throttle. I'm thinking new Cummins lift pump, then a low pressure pusher pump,. still waiting on word from my master pump builder to give me the correct psi pusher pump. Don, I will get pics soon.

 

[bgilbert]

Update: Don't run WITHOUT the isolator. Don't run fuel live to the gauge. I'm told the isolator is there not only to keep fuel from going into the cab, but in my case more importantly to dampen the pulses/vibrations of the fuel, injection pump, in this case, the 12V cam driven LP. My FP gauge started ticking a little bit, say 10-11psi, then full out bouncing between 0 and 30psi. So its shot. Can't be warranteed because I didn't run the isolator. Out $129.