Hi forum, i want to keep an eye on the fuel pressure on my xjs, since its a facelift xjs with all fuel connectors to be some kind of unique style with olive seals it quite hard to just slap gauge in.

What im thinking - to cut the return fuel line in half and put 3/8 T-Fitting with clamps and 1/8 27 NPT for gauge
or also i thought, can i cut it and put AN6 T-fitting with 1/8 NPT, but question is what size feed and return lines are, can i put AN6 fitting on the ends?

if there any easier way, please let me know, all this fuel hoses are N/A and i dont want to screw things up.

 

The return line does not have the injector pressure in it. Take the fuel rail off and have a Schrader valve silver soldered into it.

 

thanks, but i really would prefer not to do it, im not very good with soldering and taking rail out on my xjs is real PIA

 

FYI solder and silver solder are two very different things.

 

Can you recommend a schrader valve to silver solder on? I might take this project up. Most of the ones I see are brass type with orings?

 

I would use something like this.


Maybe you can get a used rail on Ebay and modify that one then swap over. Remember to get rid of all fumes before using a torch on the rail !

 

Yeah, that's what I was looking at, but those threads basically are the only thing creating the seal, and they have to bite into a relatively thin piece of metal. I would have to be threaded into the flat end of the tube?

 

You don't use the threads, drill a clearance hole and silver solder in position.

 

On my ‘92, After replacing the plain rubber portion of the fuel lines, I cut it and put in an inline gauge with a couple of fuel injector clamps. Nothing fancy. Can’t remember if I put it on the supply or the return. I guess you could put it in one of the crossover hoses. It registers about 30 pounds where I put it.

 

Is there any reason you couldn’t do it here?

 

1992 doesn’t have that hose there.

 

I have it on inlet, if I did it again it’d go on crossover (finger in photo)