dvonrick

Got a leak in fuel line that runs from pump to filter. Guess the original wasn't meant to last more than 37 years. Anyway parts store has fuel hose rated for 50psi but it says not for use with fuel injection. Far as I know pressure at the fuel rail is less than 40 psi. Will this hose be a problem or should I swap it out for something better or more appropriate? Probably a dumb question but not something I want to fail me in the woods. Thanks

exasemech

Come-on, how much does a couple feet of injection rated hose cost . Even if the carb. rated (50 psi) might squeek by when new, how about after it's aged a couple years with ethanol going through it.
Failing in the woods isn't the big concern, burning the jeep to the ground is

dvonrick

Thanks. Not about cost but rather about what I could get on a Sunday to get going. Didn't want to drive with it leaking. Just a bit curious about the different types. Have had some time to research the different ratings and will swap out now that my preferred parts store is open.

UKXJ

Difficult to believe that, 50 years on, a parts store has anything other than injection rated fuel line.

tlc1976

On other vehicles, I’ve used the 50 psi hose (SAE 30R7). Like on my GM cars with the fuel rail to be 44 psi max. I did this many moons ago, when every dollar was a major deal, and the fluorelastomer stuff cost many times more and was only stocked in short stubs anyway. I did still use the fuel injection band clamps because I know how poorly the worm drive clamps hold.

Have never had a problem on any of them. Like on my Chevy Celebrity which I did in 2003, and drove it to work today. If I were to do it today, I’d get the higher pressure stuff, but for what I got, I’m not messing with it. No steel line exposed to road salt would have lasted this long.

I think they say not for fuel injection because FI systems aren’t all the same, and they don’t expect the average Joe piecing together generic fuel line to know. So it’s just a catchall to save their bacon. For example a coworker with a GM truck said it ran at 80 PSI.

awg

Dont quote me, but I think the Bosch fuel pump itself that also fits many other vehicles runs about 80psi

It is regulated down, so on post 95 models, the regulator is in the tank, so pressure is 49psi, so you should be good

However, on 94-95 models the regulator is on the fuel rail, so the underbody line would experience full FP pressure

Dont know with pre-OBD models

awg

here is the spec on the Bosch BFP0382 Fuel pump I have used and is specced for my 96 XJs

This pump is used for a huge range of vehicles

It says 3 bar, but I find that hard to believe, as that is 42psi, but the 96 is specced (and tested on this forum) to run at 49psi, and I do not believe a regulator can increase fuel pressure?

(On a 96, the pump, regulator, and gauge are built into an in-tank module, but each part can be repaired or replaced separately)

anyway, fwiw, here is the stated spec

" Bosch fuel pumps are constructed from a precision spin-balanced polymer encased armature for noise reduction so you won't have an annoyingly loud fuel pump buzzing away under the car. Specifications- Flow rate - 105 litres per hour @ 3bar pressure In-tank pump kit - Includes filter includes electrical connector includes rubber hose pipe adaptor

Bosch In Tank Fuel Pump - BFP0382 - Bosch | Repco Australia "