L322 Range Rover Td3 won't start, then starts after a few minutes

Ladies & gents (though I assume mostly gents),

I have a 2003 Td6 that twice in the last couple of days has not started. Engine turns over, but no fuel seems to be pumping. It's important to note that I was on a (very) slight incline, with the engine at the top. It seems to start ok when I got the car off the incline and into a more level position.

The "stealer" did a wide range of tests and the consensus is that one (or both) of the fuel pumps is faulty. He advised, however, that they were unable to tell me which one, the interior or exterior pumps.

He then advised that if replacing one (only), it may not 100% solve the problem because if it's the other, the "new" one will be working extra to try to compensate for low fuel pressure from the other, thereby reducing it's lifetime.

Wondering if anybody has had this issue, and if so, what is the best course of action, replace interior, exterior or both?

Also seem to have a problem (this has gone on for several months now) with the fuel (sender?), where my fuel gauge shows only 75% full tank, even though I have pumped enough diesel to fill the tank.

Could both items be related somehow? Is the interior (ie. inside the tank) fuel pump and sender one unit that could both fail?

Several questions I know, but appreciate your help!

Benjamin

Not sure what you mean by two pumps (not having a diesel) the pump in the tank, with sender, is max £200 - the only other pump I can think of is the injector pump and that adds another zero onto the equation....

Hi thanks for the feedback. Yes, the TD6 (BMW 2.9L) has 2 fuel pumps, one on the inside of the tank which I've just found out is also coupled with the sender, and another on the outside, just front of the rear axle. Dealer recommended replacing one or both, I'm just wondering if anyone else has had this issue and what their preferred option would be.
cheers! Benjamin