AJGalaxy2012 wrote:

Previously before the drain mod it would poured out thick blue smoke, the engine pinking and visibility at the back zero, you couldn't see the car behind.

AJGalaxy2012 wrote:

jaguar3 wrote:

JLR make drain mode, but it not solve the problem compleatly. They need to make right turbo drain mode as well in this case, but they didnt. .

The drain mod definitely did resolve the issue completely with mine, I even had my son drive behind me for 20 miles or so really steady, when I booted it no smoke at all. Previously before the drain mod it would poured out thick blue smoke, the engine pinking and visibility at the back zero, you couldn't see the car behind.
Green Oval were fully conversant with the mod, assured me it would resolve the issue and they were really confident and as it turned out, they were right.

Surely the pressure from the oil way is the same at both ends of the turbo shaft and therefore the likelihood of it being pushed out of the seals be equal?
The turbos were given a clean bill of health when the work was done. The mod was released by JLR to cure this problem, I don’t see why some people seem to doubt that the cause was correctly identified and the solution affects a cure. BMW i3 Electric Car
2012 Full Fat RR 4.4 TDV8 (now gone)
2006 VW Touareg 3.0 TDi V6

Turbo drain hoses are large diameter to offer no resistance to flow. Turbo oil seals are not really 'seals' but oil control rings that will leak a bit of oil in normal use but a lot of oil if the drain hose is blocked or the seals are worn due to oil starvation or contamination. In normal use the positive pressure on the intake side also helps retain the oil on the intake side. The fact that you had blue smoke and a change in engine behaviour says this was not a normal example of this common 4.4 V8 problem. For almost everyone else it's grey / white smoke that doesn't change engine behaviour as it's just oil dribbling out of the exhaust side of the 2nd turbo and being vapourised in the hot exhaust when the 2nd turbo is used. If you now have a free flowing turbo drain then it's fixed. 2012 TDV8 Vogue (L322)

AJGalaxy2012 wrote:

Surely the pressure from the oil way is the same at both ends of the turbo shaft and therefore the likelihood of it being pushed out of the seals be equal?
The turbos were given a clean bill of health when the work was done. The mod was released by JLR to cure this problem, I don’t see why some people seem to doubt that the cause was correctly identified and the solution affects a cure.

JayGee wrote:

Turbo drain hoses are large diameter to offer no resistance to flow. Turbo oil seals are not really 'seals' but oil control rings that will leak a bit of oil in normal use but a lot of oil if the drain hose is blocked or the seals are worn due to oil starvation or contamination. In normal use the positive pressure on the intake side also helps retain the oil on the intake side. The fact that you had blue smoke and a change in engine behaviour says this was not a normal example of this common 4.4 V8 problem. For almost everyone else it's grey / white smoke that doesn't change engine behaviour as it's just oil dribbling out of the exhaust side of the 2nd turbo and being vapourised in the hot exhaust when the 2nd turbo is used. If you now have a free flowing turbo drain then it's fixed.

The only route to the intake for oil is through the compressor side oil seal. 2012 TDV8 Vogue (L322)

Just as the only route to the exhaust side is through the turbine side oil seal, I dont see what point youre making?

Kevip said it was blue/black smoke and a rattling noise at the same time, thats exactly what I had which I assumed was preignition due to incorrect and uncalculated fuel being enetered (engine oil) and the blue smoke meaning it had gone through the combustion process i.e. the intake side.

It was repeatable on mine, driving 10 miles at less than 2000 rpm would make a very effective smoke screen for about 20 seconds or so when you booted it for the first time. BMW i3 Electric Car
2012 Full Fat RR 4.4 TDV8 (now gone)
2006 VW Touareg 3.0 TDi V6

Your turbo seals were likley leaking more than usual if it's happening after only 10 miles of driving. Either the seals were worn more than normal or the return drain was blocked more than normal (as I suggested earlier) - either way a free flowing turbo oil return to the sump will cure it. Pre-ignition doesn't happen on a diesel engine in the conventional sense as all combustion is compression induced but excessive oil may create a different combustion point in the stroke? Most people just see the occasional white/grey smoke after a while of not using the 2nd turbo for a while - days, weeks or even months. 2012 TDV8 Vogue (L322)

AJGalaxy2012 wrote:

It was repeatable on mine, driving 10 miles at less than 2000 rpm would make a very effective smoke screen for about 20 seconds or so when you booted it for the first time.

Again maybe try 5w-40 in the summer esp on a high mileage engine. Same cold starting viscosity but will be slightly thicker when hot if low idle speed is creating insufficient pump suction. Also worth noting that not all oils of the same grade have the same viscosity and I seem to remember back in the day that Mobil 1 0w-40 was closer to a 30 grade. 2012 TDV8 Vogue (L322)

jaguar3 wrote:

Same here, but what mean "very effective smoke screen"?

Quote:

I have puff of smoke after apr. same distance, but I can`t say its "very efective". Its just a puff, detectable from mirrors, but when its windy its not even detectable. And during winter time no smoke at all.
Drain mode done, no result.

Quote:

Strange thing is why there is no smoke in winter time?
1. Oil viscousity thicker? Maybe scavange pump is more effective with thicker oil.
2. Exhaust pipes colder? In case if leakage is from the hot-side of turbocharger.
3. Oil evaporation not effective in cold? In case if leakage is from the cold-side of turbocharger, oil vapors are not able to pass cold intercooler.

Do you have a link to the thread for the runaway TDV8? - was it the 4.4 or 3.6? 2012 TDV8 Vogue (L322)

From what I can remember, I think it was a 405 and the guy was actually on honeymoon in Scotland when his car destroyed itself. I believe JLR paid for the repairs that were North of £26,000.


Found it:-

https://www.fullfatrr.com/forum/topic48947.html?highlight=runaway[/url] BMW i3 Electric Car
2012 Full Fat RR 4.4 TDV8 (now gone)
2006 VW Touareg 3.0 TDi V6