Any thoughts on the above?

The workshop manual in the Wiki is downloadable.
It has a full chapter on DTC = diagnostic trouble codes. It’s long but comprehensive. That’s where I would start Gone to a good home: 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory and clear glass = "Rory"
2025MY Defender D350 90 in Silicon Silver on coils
1974 Series 3 Lightweight = "Millie"
Many, many other Landies over the years
My preferred specialist: www.glenrands.co.uk
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Does the noise sound like a tapping around the top left of the engine that changes as with the revs.?

If so, it's most likely the big end going.

Big ends run on the crankshaft journal’s at the bottom of the engine, so it’s unlikely to be heard at the top end

The last two L322s (4.4 TDV8) with a tapping that sounded cam chain-ish, loudest in the top left front section of the engine, had knackered big ends. the loudest one needed crank and rods, the other we caught early enough to just need new bearings.

Thanks for the replies.
As advised I’ve referred to the manual and found the fault code and resolution, hopefully I can get a dry spell and give it a go.

Anyone had starting issues from the lift pump relay?

Till I get that fixed I can’t turn it on to get a video to upload of the sound. I do hope it not that deep into the engine though!

Please find the below video, got some time to go out today and work on her. The fuel lift pump issue has gone must have been due to battery voltage?
I have found today the sound is coming from the passenger side. It is a bit more high pitch than what It sounds in the video.
This is recorded with both belts off the car.

Any recommendations would be great

Please let me know if you can open the links below I’m not sure how to upload videos to the forum

https://share.icloud.com/photos/0ae1sHJk5xE3MPc2UczfYk-gA

https://share.icloud.com/photos/0e0mwmjj56JLh0qvzH786dE7A

Also only getting the two below faults which I think are simply because the fan belts are disconnected.

Click image to enlarge

Click image to enlarge

Hi there, by no means a 4.4 expert but I'm ex motor industry tech with 40+ years of enginw work Etc. Difficult from just a video but to me, seems very top end, hydraulic lifter type noise. My suggestions...........by a cheap stethoscope and safely test near n/s cam cover area. If it's there, the steth with pick this up and allow you to pin point a spcific area. Does it get worse hot or cold? Having listened a few times, I'd always stick to basics. Get the oil out, what does it look like. Check the oil filter, replace for best practice.

Over the years, I've seen many assumptions of major failure components when in reality, it's often the most simple repair process which works. I'm not sure how I can contact you directly but I'm more than willing to help and advise. Please let us all klnow the outcome.

Thank you for your reply, I do have a stethoscope (cheap one from eBay from a while ago) but don’t seem to be picking up anything that sounds peculiar.

I will drain the oil (hopefully tomorrow) and report my findings. Providing I don’t find anything abnormal shall I refill or do you advise any other testing?

Your support would be great! I’m technically minded (as hobby I do a lot of mechanical work even rebuilt a 2 door Range Rover and series 2 both of the engines I rebuilt) but with these later engines I need some guidance due to so much components and worst the tight engine bay!

I’ll PM my contact details

If your draining oil is it worth sending a sample for analysis. God forbid you have a bearing failing or similar but it could be picked up by oil analysis. It doesn’t sound heavy enough for a big end etc to me though. Have you looked at injector values with engine idling using diagnostics? There may be an odd one out which may lead to a particular cylinder to investigate. It’s possible an injector has “hosed” and caused a piston skirt to pick up ?
This of course wouldn’t be good news
Wish you all the luck with this & please keep us updated
QT

Thanks, I’ll try reading the values on my Hawkeye.

What do you mean by “injector has “hosed” and caused a piston skirt to pick up”?

So the injector blocked? Burnt tip?
Sorry for my ignorance, something which would lead to your above being possibly correct is the initial gusto code I got but foolishly cleared without making a note of the code was misfire cylinder 2. But even though I’ve had the car running that fault code hasn’t returned.

Look at pulse injector timings on iid tool, anything looking miles out from the others may give you a clue of a dodgy injector , if all similar timing chain jumped a tooth imo.

Before you drop the oil, take the oil filter out and cut it open.

Im sorry to say my wife's 4.4 didn't sound as loud as yours and the oil filter was showing swarf so we have taken the decision to swap the motor out and send this one out for analysis...

So again, remove and inspect the oil filter before you bother dropping the oil...

And finally, if you suspect the injectors? They are simple to unplug. Unplug one at a time and see if the noise disappears? Mine didn't but its worth a try... You'll need a diagnostic tool to reset the MIL light as it won't want to start between unplugging and restarting...