I had a loose vacuum pipe on secondary turbo after it was fitted. Took them seconds to diagnose it and now all fine. Simple human error but all fixed quickly
Get it on the ramps and check hoses  Gone to a good home: 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory and clear glass = "Rory"
2025MY Defender D350 90 in Silcon Silver on coils
1974 Series 3 Lightweight = "Millie"
Many, many other Landies over the years
My preferred specialist: www.glenrands.co.uk
--------------------------------------------------

Truck coming in 20 minutes to bring it to garage RR Vogue 4.4 TDV8 - 11
Toyota Land Cruiser Prado - 02

LR Discovery 4 SDV6 -11 - Gone
RR Vogue 3.6 TDV8 - Gone

Keep us posted  Gone to a good home: 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory and clear glass = "Rory"
2025MY Defender D350 90 in Silcon Silver on coils
1974 Series 3 Lightweight = "Millie"
Many, many other Landies over the years
My preferred specialist: www.glenrands.co.uk
--------------------------------------------------

Codes back;

P006A-00 - Manifold absolute pressure - mass or volume air flow correlation - Pending

P00B-D-07 - Mass or volume air flow A circuit range/performance - Air flow too high - Historic

P00BF-07 - Mass or volume air flow B circuit range performance - Air flow too high - Pending

U0405-68 - Invalid data received from speed control module - intermittent

P0235-94 - Turbocharger/supercharger boost sensor A circuit - Pending

P2264-00 - Water in fuel sensor circuit - intermittent


still hoping that it´s just hoses  RR Vogue 4.4 TDV8 - 11
Toyota Land Cruiser Prado - 02

LR Discovery 4 SDV6 -11 - Gone
RR Vogue 3.6 TDV8 - Gone

following some own detective work I found this bulletin from 2013; LTB00504V3

(https://f01.justanswer.com/crzydrvr00/25dd9cf9-0148-40e5-9a26-9bba24af3528_LR4+Diesel.pdf)

It refers to a faulty CSOV and my car pretty much scores a bingo for mentioned fault codes.

Alos read on the forum that this tends to affect the car around 2.500 rpm so seems reasonable.

Would this also explain the air leak from the smoke test or would these be separate issues? RR Vogue 4.4 TDV8 - 11
Toyota Land Cruiser Prado - 02

LR Discovery 4 SDV6 -11 - Gone
RR Vogue 3.6 TDV8 - Gone

check out these links. Its a common topic on Disco and Jag forum.

https://www.jaguarforum.com/showthread.php?t=82947

https://www.fullfatrr.com/forum/post450582.html

http://www.disco3.co.uk/forum/topic178898.html

So, first update from the garage and no real news...

They have smoke tested again and can only confirm that the air leak is coming from somewhere in the rear of the engine. They will now remove the intake manifold and some protection plate (?) to be able to see more.

Their thought is that it can be either;

- The EGR Valve
- The oil cooler
- The EGR cooler
- The oil separator for the crankcase ventilation?

The EGR hoses are not leaking, nor is the inlet manifold or the 4 short hoses.

Regarding the "oil leak" they have also not found this and they believe the two can be related.

There is no oil visible in or in front of the "V"

The CSOV valve looks fine on a visual inspection.

I know there are multiple threads on here but as I dont know how these engines work (learning quickly) it´s not easy to see what I can now rule out based on forum experience.

Anything you guys can contribute is very appreciated - as always.

cheers! RR Vogue 4.4 TDV8 - 11
Toyota Land Cruiser Prado - 02

LR Discovery 4 SDV6 -11 - Gone
RR Vogue 3.6 TDV8 - Gone

I'm surprised that the garage wasn't able to spot the source of the escaping smoke by removing the cabin air intake which is only held in place by 2 nuts which are easily removed. With the air intake removed visual access to the back of the engine is enormously improved.

The inlet manifolds were revised by the time the engine was fitted to the L405 so also likely fitted to the L322 engines from early 2012 when a few other improvements to the engine were made. I haven't yet determined if my April 12 build vehicle has the revised inlet manifolds. The inlet manifolds on early TDV6 engines were prone to splitting along the edges due to the material flexing excessively from being too thin and without adequate bracing so I suspect the same probably could occur with the first version of the 4.4's inlet manifolds. The TDV6 splits caused restricted performance when the engine had to work a bit and the tell-tale sign being oil residue. Perhaps your engine has a split inlet manifold.

Graeme, yeah I´m also a little surprised it has taken a full day and still not found the leak....

They were reluctant to take down the inlet manifold as that makes it impossible to smoke test any more...

They can see smoke escaping somewhere in the back of the engine and can even hear it.

They have however ruled out that the air leak and oil leak are related and they now believe that the oil leak can be traced to the oil cooler so hopefully the gaskets...looking from underneath they can see some oil between the engine and gearbox.

He did say that the lower gasket is a PITA tho as the whole oil cooler needs to come off, is this correct?

Search for air leak continues today with inlet manifold taken out... RR Vogue 4.4 TDV8 - 11
Toyota Land Cruiser Prado - 02

LR Discovery 4 SDV6 -11 - Gone
RR Vogue 3.6 TDV8 - Gone

There is a great thread on here on changing out the oil cooler gaskets. Gone to a good home: 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory and clear glass = "Rory"
2025MY Defender D350 90 in Silcon Silver on coils
1974 Series 3 Lightweight = "Millie"
Many, many other Landies over the years
My preferred specialist: www.glenrands.co.uk
--------------------------------------------------

Thanks Rob, just found it in the Wiki.

So should be approx a 3-5 hour job for a mechanic to change both the oil cooler gaskets and the O-rings? RR Vogue 4.4 TDV8 - 11
Toyota Land Cruiser Prado - 02

LR Discovery 4 SDV6 -11 - Gone
RR Vogue 3.6 TDV8 - Gone

The inlet manifolds are the plastic covers that sit on top of each head. The one in the centre is the intake manifold which is easily removed and which can also split, hopefully only in the original design as it too has been revised. Hopefully your leak is from one of the 4 short hoses that connect the intake to the manifolds as the design of those hoses has also been revised to simple, straight hoses.

It's only a thought......but if the garage is going to take 4hrs to change the oil cooler O rings, would it be sensible to change the whole oil cooler 'just to make sure'? If it was a five minute job to do the seals, fair enough, but if the oil cooler goes 't*ts up' in a while, you've another 4 hrs labour to go back to square one?
I had the dreaded oil cooler leak, the Indy charged me £700 all in for a genuine LR oil cooler [plus antifreeze] and I now know the job is done especially as I plan to keep her long term..........unless the bank account reaches zero! I could have opted for just the O rings & it 'may' have cured it......just a thought. 2012 Orkney Grey Westminster 4.4TDV8 with Ivory interior.........nice!
BMW R1200GS
Alfa Romeo Giulietta
Just one Montesa now, 349 White Wonder
Austin A40 Farina MK2
1975 Morris Marina 1.8TC

@GraemeS; they are fairly certain that the leak is not coming from the manifold but further back in the engine.

Somewhere around oil cooler, EGR valve, oil/water seperator? They can see smoke coming but the steel plate and inlet manifold is in the way so they need those gone and then starting to look for cracks etc.

@Fox889; I thought the O-rings and oil cooler gaskets were two seperate leaks? Or would a new oil cooler take car of both issues?

Definitely planning on keeping the car long term so I´d like to do as much preventive work as possible while they have stuff off...anything else I should ask them to do while they have the manifold removed? RR Vogue 4.4 TDV8 - 11
Toyota Land Cruiser Prado - 02

LR Discovery 4 SDV6 -11 - Gone
RR Vogue 3.6 TDV8 - Gone

jackie-o: I'm pretty new to this lark, but, I believe there's an O ring that sits at the back of the engine high up that is a common oil leak problem. If it's that particular one that's leaking then apparently it's pretty easy & cheap to replace.
But, if the oil cooler gasket is leaking [not sure if there are any O rings attached to this or not] you'll need to remove the whole oil cooler to replace the gasket & this takes 4hrs @ £x per hour. For the sake of £300'ish for a new genuine LR cooler [Nissen do a pattern part cheaper] & dependent on mileage & age, I would look at spending a little bit more having the oil cooler changed & never to be re-visited. I'd be mortified if I paid 4 hrs labour just to change the O rings/gasket then find in six months there's another leak.
I know £300 extra is still £300 extra but in the long run may be a thought?
I stand to be corrected if the above is not quite accurate.
Hope this helps. 2012 Orkney Grey Westminster 4.4TDV8 with Ivory interior.........nice!
BMW R1200GS
Alfa Romeo Giulietta
Just one Montesa now, 349 White Wonder
Austin A40 Farina MK2
1975 Morris Marina 1.8TC