W211 blue smoke after idle

Darrendazza

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Is it WHITE Smoke...and does your oil level go up.....then leaking injector.....if blue I still say crank pressure preventing oil feed into turbo from returning to sump.....its forced slowly through the (Priston ring type seal, so has a gap) on the rear...drips into the housing...then when there is enough built up it smokes....but then when you drive, 1, less crank pressure as turbo vacume via PCV then clears until idles again 2, theres so little you can't see it anyway. Also I found once it smokes.....turn it off and leave it 3 days later...still smokes from start because you did not drive it and clear it...thus not injectors....but again its just theories....Darrendazza....our symptoms as similar bar the time....mine takes a lot longer, at least 20mins if not 30hr.
You still not answered my question of blowby...when your engine is at 90 (or normal operating temp) and you loosen the oil filler cap, is there pressure like opening a bottle of fizzy drink??
Once I've complete my catch can to satisfaction....I'm going to try the waiting thing again to check for smoke.....
I have noticed the same if I leave it to smoke then turn off with out giving it a blast down the road the nxt morn it will smoke for a road or 2! Still not checked if it’s running pressure as not really got it up to a good temp only popped shop n back but hoping to get a drive outta her tonight then il pop the filter cap see if there’s any pressure build up
 

R0SSY

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Also noticed mine smoke if I park facing up my drive.(up hill) but not if I park facing down i.e. reverse on...mad!
 

Darrendazza

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Some one did mention about parking up or down hill in 1 of the chats so I went out for a drive tonight seemed to smoke abit more than normal when booting it . either that or just the headlights showing more smoke lol no over the top but deffo abit when booting it undone the oil cap not really any pressure there just a quick vid of the cap coming off
 

Darrendazza

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Some one did mention about parking up or down hill in 1 of the chats so I went out for a drive tonight seemed to smoke abit more than normal when booting it . either that or just the headlights showing more smoke lol no over the top but deffo abit when booting it undone the oil cap not really any pressure there just a quick vid of the cap coming off
I know the noise it’s the front pully
 

Kev555

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From my own experience with the bad injectors and smoke it can be anything from a white to a blue engine smoke as Alexander and couple others on here that have a lot of experience of these Mercs. It sounds like this problem to me?
 

R0SSY

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From my own experience with the bad injectors and smoke it can be anything from a white to a blue engine smoke as Alexander and couple others on here that have a lot of experience of these Mercs. It sounds like this problem to me?
But it does not add up, if its an Injector (and I'm not saying its defo not...just my thought prosses) why would if only do it when the engine is warm...then only as in my case 1/2hr after that? You would expect it to do it 1/2hr after starting the car...as injector leak I'd have thought would not change from cold start to warm>?
 

R0SSY

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Some one did mention about parking up or down hill in 1 of the chats so I went out for a drive tonight seemed to smoke abit more than normal when booting it . either that or just the headlights showing more smoke lol no over the top but deffo abit when booting it undone the oil cap not really any pressure there just a quick vid of the cap coming off
I'd say thats same as mine.......
 

Kev555

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But it does not add up, if its an Injector (and I'm not saying its defo not...just my thought prosses) why would if only do it when the engine is warm...then only as in my case 1/2hr after that? You would expect it to do it 1/2hr after starting the car...as injector leak I'd have thought would not change from cold start to warm>?
If
But it does not add up, if its an Injector (and I'm not saying its defo not...just my thought prosses) why would if only do it when the engine is warm...then only as in my case 1/2hr after that? You would expect it to do it 1/2hr after starting the car...as injector leak I'd have thought would not change from cold start to warm>?
My faulty injector didn't smoke either all the time it was intermittent. It missed and messed about intermittantly for nearly a year before it eventually went and I had to look at it then. Limp mode was the worst it done and a reset with icarsoft and away id go again. Suppose you could get injectors tested to rule them out if you cant pin it to an oil problem. I didn't catch the miles on your car in the posts?
 

R0SSY

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132k so just run in...:)
 

Kev555

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True:D but mine needed injectors at 149k and ive heard on the forum here of some needing them a lot earlier depending of breed of injector
 

Doug1234

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I changed fuel filter on my Jeep this weekend and spent time chasing up exhaust fume smell getting into cabin when stationary in traffic.
I have one exhaust manifold that rattles and the collar (lowest one) on its flexi has some movement, so I expected it to be leaking although no soot present.
Anyway while I'm in there I remove pcv valve and block one end and suck on the other to test its ok and it holds up ok. Now thats not a problem but it did occur to me that its completely open into the rocker cover so the turbo inlet has to be drawing a lot of vacuum to completely shut it even partially meaning at tick over and probably up to 2k revs its still wide open possibly ?.
This parking facing up or down points to oil collecting and pooling somewhere, but I have no idea where it would be as my Jeep does not have the batwing setup I just have one pipe from a single air filter to turbo with the pcv valve connection.
Dirty air filters (Mercedes have 2 ?) would cause more air to be pulled from crankcase ?, and oil past its change interval ? ... I change mine at 5 thousand miles and as I've mentioned before its completely thin and trashed.
 

Darrendazza

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I'd say thats same as mine.......
Right seems we all stuck lol if it was say the turbo oil seal where would the smoke start from as in I wanna run the car with certain pipes off 1 at a time so say it’s turbo it should start smoking at what part of the system/engine or injectors where would the smoke start if it’s them
Is it WHITE Smoke...and does your oil level go up.....then leaking injector.....if blue I still say crank pressure preventing oil feed into turbo from returning to sump.....its forced slowly through the (Priston ring type seal, so has a gap) on the rear...drips into the housing...then when there is enough built up it smokes....but then when you drive, 1, less crank pressure as turbo vacume via PCV then clears until idles again 2, theres so little you can't see it anyway. Also I found once it smokes.....turn it off and leave it 3 days later...still smokes from start because you did not drive it and clear it...thus not injectors....but again its just theories....Darrendazza....our symptoms as similar bar the time....mine takes a lot longer, at least 20mins if not 30hr.
You still not answered my question of blowby...when your engine is at 90 (or normal operating temp) and you loosen the oil filler cap, is there pressure like opening a bottle of fizzy drink??
Once I've complete my catch can to satisfaction....I'm going to try the waiting thing again to check for smoke.....
most time after I drive then leave it sit the oil level is high then I wipe it off and it’s about 3/4 full but this is the worst car I’ve found for checking dipstick I mean I can dip it 3-4times when cold and never same lol is there any way to check the piston ring seal on the rear or the housing as I’m leading towards that as I say I can drive it no smoke if I boot it I get abit every now n then also did a few miles low revs so not really using turbo then when I boot it smokes abit then back to clear driving and I can drive it for 2hours easy with out smoke but if I pull up and leave it idle for 5-7-10 mins it will smoke from cold or hot I’m thinking it’s the seal as ur saying it’s not draining oil back to sump quick enough to stop it leaking out the seal so wanted to get a few bits off to see if there was any signs or is it turbo off and strip n just do the seal n make sure the drain way is all clear just thinking if it’s in the turbo surely I can take a pipe off run the car yeh I know it will b loud but sod it lol and if it’s that seal and I have the rear pipe off wouldn’t the smoke come out there and not run though engine n exhaust ???
 

bembo449

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I think i would bite the bullet and strip the turbo and its pipes down and clean thoroughly, i have stripped a turbo completely and found the seals on the shaft full of baked in oil , once cleaned out and rebuilt , no more smoke but i would 100% have the oil return pipe off to see if it is clear if you dont want to do the lot pal
 

R0SSY

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I think i would bite the bullet and strip the turbo and its pipes down and clean thoroughly, i have stripped a turbo completely and found the seals on the shaft full of baked in oil , once cleaned out and rebuilt , no more smoke but i would 100% have the oil return pipe off to see if it is clear if you dont want to do the lot pal
Part of the issue is that there is no oil return pipe...it sits on a turbo pedestal.....

A_642_096_11_45.JPG
 

Darrendazza

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I think i would bite the bullet and strip the turbo and its pipes down and clean thoroughly, i have stripped a turbo completely and found the seals on the shaft full of baked in oil , once cleaned out and rebuilt , no more smoke but i would 100% have the oil return pipe off to see if it is clear if you dont want to do the lot pal
I am tempted to strip it down and do the seal but knowing my luck some of the bolts will snap then il b in it deep
 

Darrendazza

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Part of the issue is that there is no oil return pipe...it sits on a turbo pedestal.....

A_642_096_11_45.JPG
Yes I had this all off new gaskets when doing the cooler wasn’t that bad a job might take it off again and give it all a good blow out incase there’s any crap in there
 

R0SSY

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Yes I had this all off new gaskets when doing the cooler wasn’t that bad a job might take it off again and give it all a good blow out incase there’s any crap in there
mine was clear...but it coud be the hole to the sump.....did not want to put any air through it tho when I did my Turbo. The pedestal you can simply see through it!!
 

LostKiwi

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" and oil past its change interval ? ... I change mine at 5 thousand miles and as I've mentioned before its completely thin and trashed."

There's a clue here. Smell the oil. If it smells of diesel you have (a) leaking injector(s).
 

Doug1234

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" and oil past its change interval ? ... I change mine at 5 thousand miles and as I've mentioned before its completely thin and trashed."

There's a clue here. Smell the oil. If it smells of diesel you have (a) leaking injector(s).

I usually add up to a 1/4 of a litre of oil over the time it takes me to run those 5000 miles , sometimes its less.
My engine does not smoke though or pull the kind of tricks the original posters have suffered from.
 

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