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Discussion Starter #1 (Edited)
Hi guys. For testing purposes, I want to connect a pressure gauge on my fuel rail. I need a T-connection adapter at the fuel rail. Does anyone know the proper name of the connector type used on the fuel rail (for the 2004 Duratec)?

EDIT: Could not find an easy or elegant way to Tee into this fuel system. See post #13 for an update.


The picture below is from a sykes-pickavant catalog PDF on bottom of page 91. Link to that is HERE



In the picture is a hose & T-connector part number 31489000. That is exactly what I want, but it likely will not fit because the catalog says it is for a "Renault Plastic T-Connectors (10 / 12mm)"... but it does look like what I want.

Have you done this before? What did you use?

I looked around online and could not tell if the needed Tee adapter is included in some of the cheap pressure test kits like these;

http://www.amazon.com/Actron-CP7838...p/B0009XQUKC/ref=cm_cr_pr_product_top?ie=UTF8

http://www.harborfreight.com/master-fuel-injection-pressure-test-kit-97706.html
 

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I've looked on my fuel rail and haven't seen a connection point tor a pressure test. Does yours have one and if so, where?
 

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Discussion Starter #3
I do not think any focus has a spot to connect a pressure gauge. That is why I am asking about adding a Tee. I can not shop for or find the right type of Tee adapter because I do not know the official name (and size) of the fuel line connection on the fuel rail.
 

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Where you going to put it? Its not going on the fuel rail cause that is metal, you'll have to cut your fuel delivery line (I wouldn't) and put that T in it with some hose clamps (and id use a fuel safe sealant.) As for what T is needed, any would work as long as it was the correct size to slid up into the fuel line and was snug. Also want to make sure its not an always open T so that you'd need to connect the gauge line to the T for any pressure/fuel to escape. Plastic T? That is just asking for trouble.
 

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The Focus SPI has a shrader valve in the fuel rail for a pressure gauge, at least the early ones do (I know the 2000 does, I've made use of it ). It's just below the fuel pressure sensor - with a black screw on cap. The Escort SPI also had one.

How does this help you? - can't say. I Doubt the fuel rail will fit your engine.
 

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Discussion Starter #7
The Focus SPI has a shrader valve in the fuel rail for a pressure gauge, at least the early ones do (I know the 2000 does, I've made use of it ).
Cool, Did not know any Foci had that. Must be nice.

I should have posted a pic of my fuel rail connection, so here it is now. The light green stick is touching the fuel rail connector. This is the spot I want to Tee into. Who knows the proper name of this connector/fitting type? The same fitting is used on the fuel line connection at the firewall, so I could tee into that if I wanted to... if I had a &%[email protected]# Tee. Thanks!

 

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Dorman simply refers to them as Ford 5/16" or 3/8", problem is cobbling it together without costing an arm and leg. You can get the plastic quik-connector with like 12" of line or the steel male that goes into it but like $20 a pop each. They don't give that stuff away.

Measure the outside of the metal tube at your pointer, that's the size.

What's on the OTHER end of the rail? Earlier zetec used a blank plug after some idiot got the wonderful idea to stop supplying the test fitting to save Ford hundreds of thousands in costing. I've pulled that plug to drill and tap center for a simple long 6-32 allen button head bolt with aluminum sealing washer and tapped the OD for common valve stem like tires use. OD tap was kinda high though. The plug now fits my fuel pressure gauge perfectly by yanking the screw and the cost was the tap pretty much. $15 or so.
 

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http://www.google.com/url?sa=t&rct=...0ksDR8ds2yWmYZAxBFf_LMw&bvm=bv.75097201,d.cWc

Pages from Dorman quik-disconnect catalog. Check out pgs. 331 & 334

Note that the steel line using that bead that the connector latches onto can have more than one type of female side clip retention, they both do work. One is what you have and the other Ford used on earlier years and picced there, no matter, they interchange on the metal pipe and both will lock it down solid.

May not cure your issue but clear your thinking maybe. Just went myself trying to ID this stuff a short while back, trying to improvise for a broken connector but mine had to be ultra compact. I could get parts that worked but not compact enough joint to fit where I wanted.
 

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Discussion Starter #10
^^^ Awesome! Thank you amc49.

The fuel lines in my car (at firewall & at fuel rail) are 5/16". I am almost positive that the fuel rail nipple is the same exact type of nipple that we find on our fuel filter.

After reviewing the Dorman catalog, I now see what I need is a Dorman 800-051 Nylon Fuel Line Repair Kit; $15.48 & FREE Shipping -atm.

That part (the female connector) is the only thing I need to fabricate the Tee I need to do the pressure test EXCEPT for a few other parts that are commonly included in a fuel pressure test kit like the ones I linked to in Post #1.

Speaking of pressure test kits, I stopped by AutoZone last night. AZ has a nice kit in their tool loan program. The kit is brand new, and I will use that, but not until I purchase the needed connector above. All I have to do is connect the Dorman connector and its' hose to the Tee that is included in the kit. "The Tee in the kit" can be viewed in the pic at this link, and is shown in the dead center of the picture. That Tee might be referred to as a "ford adapter" because I read other people calling it that. I think the ford adapter Tee has nipples that are exactly like our fuel filter nipples. If so, I could remove my fuel filter, and replace my fuel filter with this ford adapter Tee instead, and not need the Dorman parts... but I will NOT do that.

I was initially hoping to find a small & very compact Tee that would simply drop in-between the fuel rail and the fuel rail connector. Oh well, a boy can dream right?

Oh, and about your other question; "What's on the OTHER end of the rail?"

The fuel rail has a cap on it, almost like a bottle cap on a Coke or Pepsi. That cap looks like it could easily be modified (drilled into) and a schrader valve could be installed. If done, the valve would hit my engine hoist eyelet, but the eyelet is removable. Very do-able and tempting, but I will pass... thanks for the idea tho.

Cheers!
 

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Discussion Starter #11
And another idea... is not buying the replacement Dorman connector... and connect the two male nipples together using raw tubing and worm drive clamps. I guess that is the way to do it. Duh.
 

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Necessity is the mother of butchery they say...........I've done it too. If any clamp joint does not back up the raised lip there then double clamp, the act of putting on the hose if fuel is present will lube the pipe enough to possibly blow off with only one clamp. Don't ask how I know............choose hose that can just be forced over the ring and then clamp behind it so can't slide off.

Many things use that same end, you are right, the filter and rail connector the same. The aftermarket has filled in this area very slowly for some reason, it took forever for them to pick up on partial line replacement sales opportunities. I think because of the legal issue of incompetent person doing work using their part and the resulting lawsuit, like what killed the Blitz plastic gas can company. You can't sell intelligence along with the product it seems and even if 15 warnings in with it too hard to read, it hurts so much. I note that the Dorman pieces are commonly blank ended on one end, meant to be used with their very expensive specialty tool kit intended for the professional to use. An attempt to scare off the normal idiot rank and file that will kill themselves with shoddy half thought out work there.
 

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Discussion Starter #13 (Edited)
The quest to find an elegant adapter that would easily "tee into" my fuel lines has died. The OEM fuel line fittings/connectors are unique and I will call them Ford Fuel QD's in this thread. I borrowed a Fuel Pressure Test Set from Auto Zone. The Test Set includes an item labeled "Ford Adapter Tee". This Tee has a schrader valve in the middle and the other 2 connections on the Tee LOOKS A LOT LIKE the the male fuel line fittings on our Focus. Very close, but will not work for a direct connect to the Ford Fuel QD.

Here is what I did.

Disconnect the fuel line that goes from the firewall to the fuel rail and forget about using it during the test. Now replace that fuel line using the Ford Adapter Tee and two pieces of raw 1/4-inch rubber fuel line (bought at Auto Zone).

If any clamp joint does not back up the raised lip there then double clamp, the act of putting on the hose if fuel is present will lube the pipe enough to possibly blow off with only one clamp.
The rubber hose does not slide over the raised lip ring of either nipple, so I did double clamp those connections. Thanks.

Here is a picture of the OEM hose and the test rig hose.


Once the Test Set Gauge was installed, here are the results;

When the engine was on, the Test Gauge was consistently reading 10 psi lower than my Torque App which was monitoring the fuel rail pressure of the FRPS. The 10-psi difference is normal because FRPS is relative to intake manifold pressure (or vacuum).

When engine is turned off (and intake manifold has no vacuum) both gauges read the same psi.

Doing this test confirmed that my FRPS is -not- messed up. When my engine is hot and car is at idle, my FRPS is indicating FRP of 55 to 60 psi. Using the Test Set confirmed my FR pressure really is getting higher than normal or higher than I believe it should be getting? When my car is first started, the FRPS readings are normal at 42 psi. It takes about 10 minutes at idle for the psi to reach the 55 to 60 psi range. Once I get out on the road and cruise, the psi settles down and hovers in the 40 to 45 psi range.

Because I have an engine performance problem (hesitation, bog, bucking, bad MPG) I am guessing the PCM might be intentionally raising FRP to compensate for the underlining and unknown problem. -my other tests (not discussed in this thread) are indicating a bad and semi plugged up cat converter.

During this test, I also back-probed the FRPS with a DVM. The voltage readings I recorded are; (measured at pins 1 and pin 3)

FRPS psi measured with Torque App verses back-probed Voltage:
10.0 psi - 3.9 Vdc
33.0 psi - 2.5 Vdc
39.7 psi - 2.19 Vdc
55.9 psi - 1.26 Vdc (shown in pic below)

This picture shows the DVM (FRPS output) and Torque App readings.


I do not plan to take any further action on this FP issue any time soon. My next test will be an exhaust back-pressure test. Could not find the right type of LOW psi gauge for this test at friends or local garages, so I bought one online. Should be doing that test within the next few weeks.
 

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Discussion Starter #14
This guy Steve posted some Fuel System video links in another thread. Posting here for future ref.

ive struck gold. very insightful technical diagnostic instruction and info.

How to test an electronic returnless fuel pump
https://www.youtube.com/watch?v=IHoKkdAGNZk

Ford Electronic Returnless Fuel System Diagnosis (Part 1)
https://www.youtube.com/watch?v=Rwve6lXriO4

Ford Electronic Returnless Fuel System Diagnosis (Part 2)
https://www.youtube.com/watch?v=u342IRRJ5bk
 

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Discussion Starter #15
Update:

Just after last post here (more than 2 years ago) I found these Dorman connectors that made my fuel line T-hose/Test hose much easier to install & use.

This Dorman fitting fits on perfectly; onto the fuel filter, onto the fuel rail & onto the fuel line interconnection on the firewall... -and it might also be same size on top of the fuel tank/fuel pump module. ->>

Dorman 800-123 Bundy Fuel Line Connector
https://www.amazon.com/gp/product/B0089SZOR4/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

I used these Dorman connectors on a fuel line "T" project, thread here->
http://www.focusfanatics.com/forum/...ing-fuel-pressure-gauge-onto-fuel-rail-2.html

The project was a temporarily mounted T-hose used for testing fuel pressure. I never updated that old thread to list that I later used these Dorman connectors.
 
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