First 5-8 minutes after cold start the IID tool showed normal „soot“ increase as in the last months (exact the same trip/distance as usual - as dozen times before).
Then soot concentration went up very fast from 15 to 20 within 10 minutes.
I parked the car 3 hours (minus 2 degrees outside temperature).
Then returned home.
Again: After 5-7 minutes the soot concentration jumped from 20 to 23x (amber) and 25 and 27,7 (red) and 31,5 within 10 Kilometers / 10 minutes.

I expected to have problems with hoses/Sensors/manifold.... but would expect that this would lead to an error code / fault.
But IID tool shows nothing at all when I look for faults (not even the red DPF warning).

By the way:
The better/newer/modified „HD heavy duty“ hoses:
is this a LR original part or after market?
Or in other words: when I go to the LR dealer will they use the better HD ones or do I have to organize that myself?

Codes don't always show in this situation - I'd say almost definitely a leak in the intake system.

I had the intercooler to throttle body pipe come loose but you couldn't notice it easily. So you could have a leak anywhere:

JLR went from flat pipe to contoured then back to flat pipe on the inlets!

If yours are flat then they could be version 1 or 3 if contoured then they will be version 2 sir

A similar thing happened to me recently, after the garage looked at it they found leaks on the intake. This has now been fixed and I haven’t seen the amber warning light since.

Thanks guys
Asked LR garage aswell as RR specialist to help - fully busy, date in 2 weeks
In the meantime I ordered 4 silicone hoses (70mm) for upgrade one weak point...

Keep us posted! Fingers crossed you'll fix it and save a lot of cash and time  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
--------------------------------------------------

Problem solved !

my mechanic suggested a stucked bypass valve in the beginning
but it was fine.

a smoke test then detected 2 leaks.

smoke came out of the sensor inlet (btw: sensor was obviously broken and then glued times ago)
smoke came also from a leaky gasket in the same plastic pipe --- which couldn't be ordered as a separate single spare part
but only as a unit "pipe + gasket" --- this is at least what I understood = 250 €





next monday the RR will get the long planned turbo drain modification ... as a preventive action

.

Great news
Is yours smoking when you boot it above 2500rpm?
The TSB for the drain mod says it's only needed if it smokes when booted. I've sought advice from a number of specialists who advise to only carry the mod out if it smokes heavily. You are drilling into the sump and there will always be a swarf risk. 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
--------------------------------------------------

had a similar problem on mine - air leak caused restricted then red DPF.

The metal clip securing the inlet hose to the throttle body (directly to the left of the red notation in the above pic) was the culprit.

Caused a bit of grief finding it but a cheap fix as I just bent the clip a bit to increase tension.

When it happened the IID / fault code said turbo #1 actuator so sometimes when I read that turbos are getting replaced I just think (some) dealers are spanking the warranty or the customer.

. Cheers, Greg
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
2011 Vogue SE 4.4 with lots of toys in Stornaway

The rapidly soot increase has been stopped with the new Hose.

Increase rate seems to be as before (the fault).
Which means still a little too fast IMO.

What I found out in the meantime:

Soot concentration does NOT increase as long as water is cold and not at normal operating temperature (for the first 3 or 4 miles or so).

As soon as water temperature reaches normal operating temperature (looking at the water temperature gauge)
the IID tool shows rising values.
The increase is even faster when I lift my foot from gas pedal to use the only engine-power (powertrain) to slow down (without using the breaks).

Could this be a hint for a not fully proper working manifold or throttle or temperature sensor?





.

Last edited by flashgordon on 31st Dec 2019 8:10am. Edited 2 times in total

Was looking into the engine bay - hoping that I could see anything suspicious by chance - then indeed I found some soot around one side of the throttle (the plastic hose on the other side is new because it was leaking).

Question:
Is there a gasket that might need to be changed?
Or is this the throttle itself?

The MAPF sensor next to that was -surprisingly- quite clean. When I sticked my little finger into that sensor-opening the finger was really black then.

Where you have indicated a possible defect gasket, there is one on that joint. Seems to be of silicone and, looking at the securing bolts on the throttle body it appears that it has been removed at some time. It may be that the gasket is not seated properly, which is easy to do. A replacement is not expensive, only a £ or 2 from an MD. Cheers
Richard

(there are no such things as an ordinary FullFat, an ordinary cat or too many tools)
2011 TDV8 Vogue Santorini Black
Gap IIDBT

Thanks
I will try to fix this then...
and take the opportunity to find out how the butterfly-valve s condition is (free of soot ?)

If you've not done the throttle body yourself before, a few hints as to what to be careful of when taking it out and replacing.

https://www.fullfatrr.com/forum/topic48780.html

I know it shows cleaning the sensor, but the same routine is appplicable to get the throttle body out. It will be dirty.



If you find at some time the throttle appears to hunt and make the revs d the same, and appears to hunt after engine shutdown, it may be the gearing in the posistioner that have stripped.

Can't upload pictures I'm afraid, too big. If you wish, PM me an email and I'll forward them. Cheers
Richard

(there are no such things as an ordinary FullFat, an ordinary cat or too many tools)
2011 TDV8 Vogue Santorini Black
Gap IIDBT