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post #1 of 13 Old 02-21-2016, 12:27 PM Thread Starter
Penguin_Jeep
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Help - Blue Smoke

After idling for a few minutes and then accelerating away - there are plumes of blue smoke. The longer I idle the heavier it gets.
It and take over 1/4 mile to clear - more if driven gently.

This is the 3.0 Diesel WK/WH (OM642 Mercedes Engine)
Now with a 105,000 Miles, has done it for the last 10k but I first noticed it after a an hours idling in a mountainous area.

Oil is a 0W30... Change not due, Diesel filter clean and tank fully cleaned and reconditioned last summer.
Oh and the engine is clean inside - everything still shiny like new.

Any ideas?

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post #2 of 13 Old 02-21-2016, 12:39 PM
hbrink123
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Blue smoke means you are burning oil. Oil could be getting past the engine seals and into your cylinders. Which would burn the oil with the fuel, thus making blue smoke
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post #3 of 13 Old 02-21-2016, 01:36 PM Thread Starter
Penguin_Jeep
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Quote:
Originally Posted by hbrink123 View Post
Blue smoke means you are burning oil. Oil could be getting past the engine seals and into your cylinders. Which would burn the oil with the fuel, thus making blue smoke
I thought it was oil, but do you think this could be coming from CCV or something?
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post #4 of 13 Old 02-21-2016, 02:07 PM
OrangePower
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Quote:
Originally Posted by Penguin_Jeep View Post
I thought it was oil, but do you think this could be coming from CCV or something?
From turbo maybe?

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post #5 of 13 Old 02-21-2016, 03:29 PM
willyok
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How's your air filter?
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post #6 of 13 Old 02-21-2016, 03:29 PM
90grandoneer
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I am not familiar with the diesel in the WK's but, as said it's burning oil that has gotten into the combustion tract. It can come from bad valve seals or valve guides. I used to have an old Mercedes that would do this and it was caused by a bad diaphragm in the cam driven vacuum pump. I don't know if yours has a vacuum pump, but if it does, this would be another place to look. Mine would start all of a sudden and, just like yours, put out massive amounts of blue smoke, but the vehicle would run fine. Good luck and let us know what you find.

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post #7 of 13 Old 02-21-2016, 04:37 PM
Hendrix9
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I was thinking maybe the seals in the turbo might be letting some oil into exhaust side. I had a car do that, but it would blow smoke if you were heavy on the accelerator, too which it sounds isnt happening to you.

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post #8 of 13 Old 02-21-2016, 06:47 PM
willyok
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When turbo seals fail and allow oil ingress it's usually due to a very restricted air filter. Check that first then move on to the CCV system.
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post #9 of 13 Old 02-22-2016, 08:20 AM
davids0865
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You are not alone!

My 2005 CRD @ 130k does the same, I'm not sure mine is oil though as the smoke stinks of diesel, haven't found the cause yet.
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post #10 of 13 Old 04-23-2016, 07:05 AM Thread Starter
Penguin_Jeep
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Air filter

Quote:
Originally Posted by willyok View Post
How's your air filter?
The air filter is a K&N panel and is pretty clean and breatheable
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post #11 of 13 Old 04-23-2016, 07:09 AM Thread Starter
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Ccv

Quote:
Originally Posted by davids0865 View Post
You are not alone!

My 2005 CRD @ 130k does the same, I'm not sure mine is oil though as the smoke stinks of diesel, haven't found the cause yet.
I took off the CCV which is quite easy - there is no clogging but oil definately an issue being sucked up - so I tried putting some stainless steel pan scourer in there - doesnt seem to have made much difference.

I'm going to try and let it idle with the CCV disconnected from the air ducting let the pipe drip into a coke bottle or something...
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post #12 of 13 Old 04-24-2016, 03:32 AM
davids0865
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Quote:
Originally Posted by Penguin_Jeep View Post
I took off the CCV which is quite easy - there is no clogging but oil definately an issue being sucked up - so I tried putting some stainless steel pan scourer in there - doesnt seem to have made much difference.

I'm going to try and let it idle with the CCV disconnected from the air ducting let the pipe drip into a coke bottle or something...
Please let us know how you get on, and good luck with finding a solution.

Mine is almost certainly not oil as it uses no oil between changes, but the clouds of grey smoke after along idle is impressive, not.

No problem under all other circumstances, hot, cold, city, motorway, fast or slow.

I believe it's injector related.
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post #13 of 13 Old 04-29-2016, 09:45 PM Thread Starter
Penguin_Jeep
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Quote:
Originally Posted by davids0865 View Post
Please let us know how you get on, and good luck with finding a solution.

Mine is almost certainly not oil as it uses no oil between changes, but the clouds of grey smoke after along idle is impressive, not.

No problem under all other circumstances, hot, cold, city, motorway, fast or slow.

I believe it's injector related.
MINOR UPDATE:
I've put in half a can of Wynns "stop leak", it claims to make rubbers in the engine soft again - including valve seals, I'll be doing 200-300 miles this weekend and then checking it.
I have also posted on youtube if anybody wants to see the issue.
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