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founds like a filter or pump fault, if the pump is running the rail has constant filtered fuel, the overfolw pressure from that us usually returned through a pipe back to the tank.
wherever you heard it from is in the same mindset as me.
new filter first, its the cheapest and have a visual inspection done of piped, just incase one has a knock in it or damage.
give it a go, and if it persists, the next would be testing pump pressure, it might be a diagnostic code, but electronics are misleading, i'd have a fuel rail pressure check done. most diesel shops have a gauge will fit on the rail.

process of elimination i guess.
 

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usually pressure controlled, one speed. its more of a 3 way recirculating pump with ,, in, out, and overflow.
note, its in the top of the tank, so the return is usually still within the tank, some model rangerovers have a 2 pipe unit some have 3 pipe unit. figure yours out and draw a diagram, get the fault spot worked out.
it will keep max fuel pressure as set up by the manufacturer at the injector rail via a filter(after the pump nowadays, which is what maked them self bleeding if you run out of fuel) and a air vent valve to assist dumping air in the system.
they usually dump the 3-4 drips of fuel down a chassis leg or a full blown return pipe to tank (not really needed but it stops smells when your spending 50-100k on a motor.

i think you have some knowledge of how the system basics works and you will figure it out. , there is never 2 faults the same to a forum keyboard mechanic, and thats all i am, a general mechanic with low knowledge of range rover brand (as i mainly do HGV articulated trucks and a mass variety of a company motor fleet. ) but, iv fitted into the 100's of fuel pumps in tanks over many brands in my day. they are ALL pityful little pumps. should have stuck with vacuum pump diesel systems. much simpler and used by trucks. enough said.

good luck, let me know how you get on.
 

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change the filter, part fill it if you can, if not, dont worry, turn on and crank, ot should start with whats in there, and allow to idle, dont rev to it chokes and rattles a bit and maybe stops, and crank again. it should self bleed through rather quick.
if this goes on for more then 304 mins of starting and stalling, you may have another issue.
pressure pressure related, pump or power to the pump.

hopefully it will be easy and fix it with filter only.
 

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it will be,, HmmmUK
but these tank pumps are miserable,, 50-/-50 right now.

maybe if it isnt the filter, and it still has an issue, then the pump is nackered.
thats what the forum is about.
not being a snipe saying but,,, if the servicing is done at the right time, all filters, not just oil and filters and fingers crossed...
then one could say if this was changed a few months ago it might have saved the pump,,


if only all us keyboard mechanics had crystal balls

we will just have to wait and see. fingers crossed it is the filter.
 
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