Fuel Pressure Guage

[Redfire 05]

Okay I bought a fuel pressure gauge (I attached a picture of the kit I bought) but where do I put it? I tried the schrader valve on the fuel line next to the passenger side valve cover, but I don't get a reading. I tightened it up pretty good, so I'm pretty sure it should have worked. I know at least some fuel was getting in there, because a little leaked out when I removed the gauge. Is this the return line? Is that why it didn't work?

I don't see how I can get it to fit on the schrader vavle next to the fuel pressure regulator as the angle fitting (or gauge if I leave the fitting off) makes contact with the upper manifold making it impossible to tighten. Is there another schrader valve somewhere else? I didn't see one.

 

[Mustang5L5]

Did you take the schrader valve off and screw it directly into the fuel rail??? Or were you trying to connect it to the actually scrader valve?

 

[jtfairlane]

I bought that exact same gauge, followed the instructions precisely, and it did NOT work. I called the tech line and followed the tech's instructions, no go. The gauge would, at best, show a reading, but not fluctuate at ALL with differing engine rpms or if I removed the vacuum line from the regulator. I returned the gauge and got a refund.

 

[jrichker]

Fuel pressure gauge adapter fittings:
http://www.holley.com/products.asp?product=17945NOS AN 4 to 1/16” pipe
http://www.holley.com/products.asp?product=16785NOS 1/16” male pipe to 1/8” female pipe

Or
See http://www.autometer.com/cat_accessorieslist.aspx?pid=10

I made my own pressure gauge and holder. I bought the NOS or Autometer adapter that you screw into the place on the fuel line where the schrader valve goes. You have to remove the Schrader valve, but save it, since you will reuse it. I ran a piece of SS (stainless steel) braided hose to a 1/8” pipe brass tee fitting that I mounted on the fender well by the MAF. I made a mount bracket out of aluminum angle I got from Home depot and bolted it to the fender well. Then I mounted the brass tee to it with some machine screws and a plate. I sandwiched the brass tee between the aluminum angle and a flat piece of aluminum that I trimmed off the extra aluminum angle. Three screws laid out in a triangle pattern go through both pieces of aluminum to clamp the tee in place. Put the Schrader valve in the spare port of the brass tee. I used a cheap industrial gauge from MSC Direct (http://www1.mscdirect.com/ P/N 56468499). It works great and was cheaper than (less than $6) anything Summit had.

If you look through the MSC Direct catalog, you can find any type of gauge you want, including liquid filled. You only need a liquid filled gauge if you mount it directly on the engine. The liquid filling dampens out the vibrations.

You can buy the Autometer Stainless Steel braided hose for like $60. Or a local shop that makes hydraulic hose assemblies can make it for you at a cheaper price. Ordinary low pressure hydraulic hose can be used in place of the Stainless Steel braided hose, the Stainless Steel braided hose just looks nice. I got mine for $4 at a place that sells industrial and military surplus parts of all kinds. The Stainless Steel braided hose goes for about $3.60 a foot and the fittings are probably about $5-$8 each. You can make your own and save some $$$, the shops may have a setup or labor charge to fabricate the hose assembly.

 

[back2fox]

Yes, its the one near the passenger side cover. Just remove the valve and screw it in. It should work, if not maybe there is something wrong with it.

I bought this one and it works great. http://www.jegs.com/webapp/wcs/stores/servlet/product2_10001_10002_760855_-1

 

[jtfairlane]

Just remove the valve and screw it in.

Bad advice.

The gauge he has pictured is designed to be used on the schrader valve without actually removing any of the schrader valve components, which is one of that gauges main marketing points.

This gauge is unlike most other fuel pressure gauges, which usually require that you remove the valve (such as BBK liquid filled, Accel, etc.)

The gauge he has pictured sold through Kirban, but the vendor I ordered mine from (and subsequently sent it back to), after finding that it failed to work properly, told me that they've been having similar issues with a recent batch of Kirban Gauges. He just most likely got a dud, just like I did.