update and a question arise

I scheduled in 10 days a smoke test, it's August, no free slots earlier

What is curious, according to the mechanics, the smoke test is low pressure and there is a high pressure vacuum test that is not smoke test but different type of test. What do you think?

I think I confirmed at least the issue is not a turbo drain mode. I drove for 3 days without going over 2k revs, that should have given it the time to fill up the second turbo. The last two days I drive aggressively with revs over 3k and monitored the back mirror - no smoke at all and no dpf error.

I am preparing to disassemble hoses and donut this weekend to have a look. At least if I break something I will know it after the smoke test next week

One question arose these days. The last 3 times I got dpf error was about 40 minutes of driving after each forced regen. Now I am driving 30 minutes per day for over a week and still don't have it. Hate mysteries  l322 2011 4.4 TDV8 Autobiography Black
l322 2007 3.6 TDV8

I say this quite often but it's worth checking the drain back valve directly under the oil filter itself is on it's locating post.
Mine came off resulting in exhaust smoke and heavy oil consumption. If yours is the same could it be blocking the dpf with excess oil?

Hi kevinp,

I will be looking at that in the weekend if I succeed in removing the parts to reach that place.
What exactly looks like and where to find this drain valve? Is somewhere on the part I circled in red in the picture below?
Thanks.

 l322 2011 4.4 TDV8 Autobiography Black
l322 2007 3.6 TDV8

Just unscrew the filter mate. The filter itself presses down on it. Dead easy just to rule it out.

Click image to enlarge

aaah, got it, I read about it, sometimes they put a non-conforme filter and it presses the thing with the spring all the time down - if that is, I will check it, thanks! l322 2011 4.4 TDV8 Autobiography Black
l322 2007 3.6 TDV8

If you are not getting the problem now - it would be a good idea to get an IIDTool and to monitor the sooting in the DPF while driving.

This will give you an understanding of the car's behaviour.

Without this info it is very difficult to diagnose what is happening.


. 2012 L322 4.4 TDV8 AB low mileage - a peach
1986 V8 Defender 90 County ex-Swiss Army - Red everything....

My preferred Independent: Roy Hardy. R & B AUTOS LTD, 20 Brook Road, Wimborne, Dorset, BH21 2BH 07500 866775‬ (Ex LR Chief Technician)

I have to say that 30mins daily runs are not ideal for DPF equipped cars. 2012 TDV8 Vogue (L322)

Abbreviated long story as i know the reason for the original cause over a year ago (lowish fuel and nightmare journey), but having had mine go into limp mode numerous times and then being force regened for it all to happen again a month later i finally bit the bullet and took the dpf off (only 2 cuts on tailpipe as my local place has a machine big enough to put the whole front section in after unbolting from cat/turbo), not had and issue since (that was March) , check it's all working now and again with gap tool and all tickety boo, be very careful with forced regens and resets of system as they often don't work properly and can cause other parts of the system to overheat (I cooked RH O2 sensor on my last and far too long attempt at a forced regen), tkae it off , have it properly cleaned and do longer journeys , as anothe rposter said 30 mins a day is not enough , take it out once every couple of weeks for a 30/60 min run above 50 .

Update - I did a smoke test and the mechanics said no issues. So the troubleshooting continues.

matthews, I hope I won't have to take it off as well though I don't discard that option. Unlike UK folks that I think based on the comments are living more in a countryside/medium cities, I am in a big city and almost daily drive. I try to bring the family in the nature during weekends but some weekends that is not much of a highway.
I know the guys do not recommend a dpf-ed diesel for such lifestyle, but I just cannot imagine a petrol engine for almost 3 tones car, it is weird to me.

I am wondering, what if I buy an OBD tool to do the regens myself when I see I go over 20% for example? I can do my normal 20 mins journey, but on the 5th minute the car is already warmed up, I can set it and drive for 20 minutes until I get the regen. I can do that without much hindering my daily routine. And I will probably have to do one such regen per week or two? l322 2011 4.4 TDV8 Autobiography Black
l322 2007 3.6 TDV8

For a daily 30min city driver the 5.0SC is a much better choice. 2012 TDV8 Vogue (L322)

Georgi wrote:

Update - I did a smoke test and the mechanics said no issues. So the troubleshooting continues.

matthews, I hope I won't have to take it off as well though I don't discard that option. Unlike UK folks that I think based on the comments are living more in a countryside/medium cities, I am in a big city and almost daily drive. I try to bring the family in the nature during weekends but some weekends that is not much of a highway.
I know the guys do not recommend a dpf-ed diesel for such lifestyle, but I just cannot imagine a petrol engine for almost 3 tones car, it is weird to me.

I am wondering, what if I buy an OBD tool to do the regens myself when I see I go over 20% for example? I can do my normal 20 mins journey, but on the 5th minute the car is already warmed up, I can set it and drive for 20 minutes until I get the regen. I can do that without much hindering my daily routine. And I will probably have to do one such regen per week or two?

In all honesty, as per above, you bought the wrong car for you circumstances
If it clears on a run and then comes back after lots of city driving that is the confirmation
Sell it and buy a 5.0 SC  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
--------------------------------------------------

[quote="Georgi" some guys delete EGR Thanks [/quote]

Clean out all the soot and muck, dirt, gunk and all hoses around the donut area, and throttle body and then make sure you do an EGR delete - many guys in Sofia will be able to remap your car at the same time, clean the MAP sensor every 1000 miles, and if your car is anything like mine you will very happy with that 4.4 engine

Leave the DPF - let it do its job !

Hi guys, update - I just touched the engine bay for the first time ever

Regarding the wrong car, I drive daily in the city and do go out of town in the weekend after all. Besides I get dpf full after 40-50 minutes, that is not normal behavior even for a diesel dpf.

Regarding the photos - have in mind I did leave the car at Bardhal 2 months ago for some kind of intake cleaning so it is normal it has not an inch of soot in the hoses.

Here is engine bay at startup :

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another update

I forgot to write that I checked the oil filter as someone suggested. I don't know what is the normal functioning so I made a video. I push the little half-ring that I think has the spring below to push it back upwards and it comes back. That means all is fine and the part is not lost or broken, right?

https://youtube.com/shorts/LrLyutV5M-U?feature=share l322 2011 4.4 TDV8 Autobiography Black
l322 2007 3.6 TDV8