[Hotcoupe]

Dave_3 Quote:
Originally Posted by dxb335d
Which tube?

The one he marked on the photo ....

Or go here
D.

Absolute classic, had me howling llike a banshee,F**ckin ace Dave

Back to work.........................................:mad0 260:

[dxb335d]

Originally Posted by m.rk77

The one in the yellow oval/circle...

Thankyou! i now see the lellow circle. I didnt notice it first glance because its so thin.

[PSLG]

Hi,

As I told you, the car went to de service this Saturday.
They removed the tube near the turbos, and cleaned all the area, placed the pipe again with new straps. The engine was running by 40min and no sign of leak. I took the car for a ride of 60km, dove in DS mode and push a little and still no sign of new leak.
The car is running 100% but I’ll be on alert mode.

Regards

[quattrogmbh]

m.rk77 - How did you get the engine cover off? There appear to be some bolts underneath the bulkhead.

[PSLG]

Originally Posted by quattrogmbh

m.rk77 - How did you get the engine cover off? There appear to be some bolts underneath the bulkhead.

I didn’t saw them remove the engine cover, at that time I was at the salon to see the 120d coupe and when I arrived to the installations they where starting to removing the tube and clean the engine.

Regards

PS: Sorry, the questions was not for me

[m.rk77]

just remove these 4 bolts lift up and pull out

Originally Posted by quattrogmbh

m.rk77 - How did you get the engine cover off? There appear to be some bolts underneath the bulkhead.

[jwbmw]

Originally Posted by m.rk77

just remove these 4 bolts lift up and pull out

And the oil filler cap

[m.rk77]

Yas, also the oil filter cap. Almost forgot ) Dont forget to put the oil cap back on before you drive! )

Originally Posted by jwbmw

And the oil filler cap

[m.rk77]

CORRECTION: there are 5 bolts. The 5th one is next to the coolant and break fluid reservoirs.

[quattrogmbh]

I've just checked. My "pipe" doesnt have any securing clips, just one smaller bore pipe pushed into the larger. I believe this pipe is an oil breather, therefore shouldnt normally be under pressure and hence not needing clips. Mine had no evidence of oil leakage, but still seem to get a smell of diesel exhaust under the bonnet...

Oh well...

[PSLG]

Hi,

my car is ok for now. I never felt any smell of exaust inside the car or under the bonnet.

Regards

[m.rk77]

I have some bad news: It smells bad again! So one week later I have the same problem again. No visible sign of oil leakage but very bad exhaust smell around the engine. Also I forgot to mention a loud popcorn popping noise in the center muffler which is located around the rear wheels.

I have to take it back to the shop again...

[dxb335d]

Originally Posted by m.rk77

I have some bad news: It smells bad again! So one week later I have the same problem again. No visible sign of oil leakage but very bad exhaust smell around the engine. Also I forgot to mention a loud popcorn popping noise in the center muffler which is located around the rear wheels.

I have to take it back to the shop again...

Get shot and get another one. Sounds like its a lemon mate. Do you have a lemon law in germany?


Good luck anyhow with sorting it.

[PSLG]

Originally Posted by m.rk77

I have some bad news: It smells bad again! So one week later I have the same problem again. No visible sign of oil leakage but very bad exhaust smell around the engine. Also I forgot to mention a loud popcorn popping noise in the center muffler which is located around the rear wheels.

I have to take it back to the shop again...

Hi,

keep us updated about the situation.

Regards

[red-max]

Originally Posted by m.rk77

I have some bad news: It smells bad again! So one week later I have the same problem again. No visible sign of oil leakage but very bad exhaust smell around the engine. Also I forgot to mention a loud popcorn popping noise in the center muffler which is located around the rear wheels.

I have to take it back to the shop again...

Sorry to hear that you still have problems.

From your description above I wonder if you just happened to stop in the middle of a particulate filter regeneration cycle? I don't know too much about this, and have never noticed it on my 335d, but I remember reading that every once in a while the diesel particulate filter has to be "regenerated", which means heating it up to a very high temperature to burn off the particles that it has accumulated.

Oh, I just found this (it was an dealer's written answer to someone complaining about a 530d throttle response problem in Dec 2005 - and I'm not 100% sure it applies to our cars, but worth a read):


This information about the particulate filter system describes how the system works and should help you to address customer concerns about this system.

In March 2004, BMW introduced the largely maintenance-free 2nd generation particulate filter system into the series production of the 525d and 530d as part of technical measures to fulfil the requirements of the EU4 emissions standard in advance. Other models with particulate filters will gradually follow. The particulate filter reduces particulate emissions to the limit of detection. The catalytic coating of the particulate filter, together with improvements in the engine control, ensure that the particulates deposited in the filter over a certain distance are recombusted on a cyclical basis. The particulate filter system essentially comprises the catalytically coated silicon carbide filter, the sensors for the exhaust-gas temperature and exhaust-gas back-pressure, an additional throttle valve in the engine air system and an extensively enhanced engine control.

The system calculates the load status of the particulate filter on the basis of a range of data provided by the engine control system, such as exhaust-gas back-pressure upstream of the filter, fuel consumption, distance driven and driving style. The engine control initiates automatic cleaning (known as regeneration) of the particulate filter where necessary. The exhaust-gas temperature is increased to approximately 600°C upstream of the particulate filter by a variety of engine measures. This increase in temperature is sufficient to combust the particulates deposited in the filter.

This process, which may last between 10 to 15 minutes, is repeated on a cyclical basis, the frequency depending on the driving style (but no sooner than once around every 180 miles (300 km) and no later than once around every 1200 miles (2,000 km)). If regeneration is interrupted by the engine being switched off, regeneration will be resumed with the next driving cycle. However, to achieve the high exhaust-gas temperature required for successful filter regeneration, the parameters for the quantity and location of injections, together with the air mass (reduction in charge pressure), are modified in the engine control such that their values differ from the normal engine tuning. In addition, the transmission shift points on vehicles with an automatic transmission are adjusted to match those of the S program.

Regeneration of the particulate filter always takes place when the engine is at normal operating temperature. In full throttle mode (not kickdown), there is no difference between the engine tuning and normal tuning during regeneration because the exhaust-gas temperatures are sufficient for the deposits in the filter to be burnt off on their own. Even in this driving mode, however, the transmission shift points on vehicles with an automatic transmission are still adjusted to match those of the S program.

The perceptive customer may notice that vehicle characteristics, such as response and noise, are different during particulate filter regeneration. These differences are related to the modified engine tuning during regeneration and do not constitute a technical fault in the particulate filter system or the vehicle as a whole.

The somewhat delayed response under acceleration, mainly at low engine speeds, results from the reduction of intake air by the throttle valve during regeneration, which does not need to open fully again until there is a significant increase in load. The maximum engine power output available remains available even during regeneration.

The modified injection parameters, such as additional post injections, and the increased exhaust-gas temperature during regeneration affect the noise characteristics of the vehicle, especially towards the low-frequency range when the exhaust system is hot. Noises (sizzling) from the exhaust system may occasionally be heard if the engine is switched off during regeneration. These noises are similar to those heard if the vehicle is parked immediately after a period extremely sporty driving. Odours are common when particulate filters on new vehicles undergo their first regeneration, particularly at low road speeds, because coatings applied during production evaporate (also occurs on vehicles without a particulate filter, but at high speeds on the motorway).

The observations described are, as stated above, normal for the particulate filter system and do not constitute a fault.

The existing quality and longevity risks are increased dramatically if performance tuning is carried out on vehicles with a particulate filter. The calculation models for particulate filter system management stored in the DDE do not work correctly if performance tuning is carried out, which inevitably leads to malfunctions and/or damage. We would also like to point out that performance tuning is generally prohibited by BMW. The same applies to the use of bio-diesel/RME. Their use is therefore not permitted on any BMW EU4 vehicle.


Perhaps someone knows if this is how they still work? As I stated above, I've never noticed any of this on my car, so maybe BMW have improved this since 2005 ...?

Also, I just noticed the warning in the last paragraph about performance tuning... ;-(

[m.rk77]

red-max: thats very interesting and it makes sense because I did notice that the engine compartment is much hotter when this smell is present but nobody else has noticed this smell, a smell that is very intense and can be smelled inside the passenger cabin and even by standing 2 meters from the vehicle.

I will have to research a little about that.

[dxb335d]

Anyone had a DPF failure as of yet?

Oh yeah, thanks Red-Max for the text!

[m.rk77]

I just read more about this particulate filter regeneration and this must be the "problem". Everything fits. But now the questions is: Why is this smell escaping into the engine compartment? Does this mean that the particulate filter is not installed correctly?

[m.rk77]

bmw particulate filter regeneration takes place every 300 to max 2000 km. It takes place when you drive at an average speed of 50 km/h for 20 minutes. Computer will take over and your vehicle will drive as in Sport mode. The particulate filter will heat up in order to burn everything that's stuck inside of it.

So that explains everything but it does not explain why no one else is complaining about this smell, which leads me to believe that something is not right around my filter which lets the burn up fumes to escape into the engine compartment. I'm guessing that these fumes are supposed to go out through the exhaust pipes, so I need to take the car to the shop and see if my exhaust system has some problems around the particulate filter...

http://www.realoem.com/bmw/partgrp.d...43&hg=18&fg=10

[dxb335d]

I think i have smelt it loadsa times.

[beemerbird]

Originally Posted by dxb335d

I think i have smelt it loadsa times.

There is an alternative thought on that Carlos.

[m.rk77]

! now you tell me? Do you smell it inside the cabin?

Does anyone else smell the burnt smell of the particulate filter regeneration?

I will start a new thread about this...