3.9 fuel rail with pressure fitting

wrc3

Member
I have a 1994 90 stock 3.9. I am going to do the fuel injectors and was wondering if there is a fuel rail that has the nipple for attaching a pressure gauge. It would make troubleshooting much easier going forward. I looked at the Disco 1 rail and it looks similar but the fuel pressure regulator is on the other side. Is it possible to fit one of these?
 

jymmiejamz

Founding Member
Callsign: KN4JHI
I would think getting the correct fittings for your fuel pressure gauge would make more sense.
 

wrc3

Member
I would think getting the correct fittings for your fuel pressure gauge would make more sense.
94’s dont have a fuel pressure gauge fitting. You have to put one inline with an adapter and clamps, thus why I was asking if there is another fuel rail that will fit.
 

JimC

Super Moderator
Staff member
RPI engineering sells an inline pressure gauge that functions well, it just happens to be made of several stacked adaptors, lol.
 

jymmiejamz

Founding Member
Callsign: KN4JHI
94’s dont have a fuel pressure gauge fitting. You have to put one inline with an adapter and clamps, thus why I was asking if there is another fuel rail that will fit.
Yes, I know. Most Land Rovers do not have ports to attach a fuel pressure gauge, so you have to T into the line. I don’t know how often you plan on checking fuel pressure, but in the off chance you do need to check, it only takes two wrenches to remove the line and attach a gauge.
 

bfoxg8r

Member
I replaced the fuel rail on my 94 due to corrosion. I used a fuel rail off a later model, with the schraeder valve.
The fuel pressure regulator is in a different spot. You will need a little fuel line, but it works great. I believe the part was err4937
 

wrc3

Member
As a follow up I did get one from a Discovery and it looks like it would fit but the fuel temp sensor fitting is father away so you would need to rewire that to extend it’s reach. And the fuel pressure regulator is also on the opposite side so you would need to extend that hose as well.
 
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