e320 smokes under heavy acceleration

tedkidd · 07-31-2008, 11:18 PM

Seems an over-fuel situation. Is this normal? Anyone else experience this?

husk323 · 07-31-2008, 11:49 PM

Miles? Is there any hesitation under acceleration? Most diesels will smoke under heavy acceleration, if the car is dying it could be air in the fuel system.

lkchris · 08-01-2008, 01:08 AM

Seems there was a thread recently with the same subject if not the same title. You could search.

Ours did it from brand new and AFAIK it's normal.

The solution is the latest V6 with particulate filters.

240D 3.0T · 08-01-2008, 10:01 AM

The 05 model has a particulate filter so it shouldn't smoke.

Are there any engine codes?

tuikku · 08-01-2008, 01:36 PM

.
Very many reasons can cause smoke.
Check the fault memory.
If there is nothing, MAF sensor.

C5DRVR · 08-01-2008, 02:18 PM

Mine also smokes if I nail the accelerator hard but only when I haven't accelerated hard recently. It seems that I get some buildup in the exhaust system and then when I nail it hard the particulate breaks loose. Afterwards, even on repeated hard acceleration I can't notice any smoke. All this makes me think I should just save up for that occasional tailgater and then let them have it.

lkchris · 08-01-2008, 08:52 PM

Quote:

Originally Posted by 240D 3.0T

The 05 model has a particulate filter so it shouldn't smoke.

Are there any engine codes?

Sorry, no particulate filters on the '05 and '06.

When our '06 E leaves the garage, the place is filled with enough diesel smell to choke you.

You can stick your face in the exhaust of our GL and never smell a hint of diesel. In fact, it smells like a laundromat, i.e. just hot and humid.

Alan Smithee · 08-01-2008, 08:56 PM

Mine does the same...big puff of smoke during heavy throttle tip-in if heavy throttle hasn't been used in a while (for instance, after the wifey has it for a few days).

It has done this since new, but seems to do it more so now (20k miles).

harkgar · 08-02-2008, 11:53 PM

Quote:

Originally Posted by lkchris

Sorry, no particulate filters on the '05 and '06.

When our '06 E leaves the garage, the place is filled with enough diesel smell to choke you.

You can stick your face in the exhaust of our GL and never smell a hint of diesel. In fact, it smells like a laundromat, i.e. just hot and humid.

I agree that there is no particulate filter on the 05-06 model years but what is that catalytic converter - muffler looking thing under the engine bay?

tedkidd · 08-03-2008, 12:05 AM

Quote:

Originally Posted by C5DRVR

Mine also smokes if I nail the accelerator hard but only when I haven't accelerated hard recently. It seems that I get some buildup in the exhaust system and then when I nail it hard the particulate breaks loose. Afterwards, even on repeated hard acceleration I can't notice any smoke. All this makes me think I should just save up for that occasional tailgater and then let them have it.

yep, that's bout right. Someone suggested fuel additive - anyone have one that's particularly good?

harkgar · 08-12-2008, 12:43 AM

Quote:

Originally Posted by tedkidd

yep, that's bout right. Someone suggested fuel additive - anyone have one that's particularly good?

Redline diesel fuel catalyst is the best all year round.

In winter I use a blend of diesel additive made by Canadian Tire, our local Wal Mart.

DESAL · 09-25-2008, 10:01 AM

Just read your idea about recycling of CDI smoke. I can wait to try it. Hope you didn't to wet with IKE.

Untertürkheim · 09-25-2008, 07:17 PM

The E320 CDI models do have particulate filters, this is seperate from the Bluetec system, but DPF have been standard for a few years now.

harkgar · 10-07-2008, 05:15 PM

Quote:

Originally Posted by tedkidd

Seems an over-fuel situation. Is this normal? Anyone else experience this?

There are very few 2006 E320 CDi cars in Toronto though I have seen one belching lots of rich black smoke on acceleration on the DVP highway and going FAST. I have only experienced this once after putting in too much engine oil, when I was accelerating hard.

As this happened only a couple of times and there were no signs of CEL or any warning lights I assume that all is well with the fuel mixture.

The black smoke from my car is not rich and thick like what you would see at diesel truck drag strips but rather a few intermittant anemic puffs.

07-31-2008, 11:18 PM	#1
tedkidd Newbie Join Date: Jun 2008 Location: Rochester NY Posts: 5	e320 smokes under heavy acceleration Seems an over-fuel situation. Is this normal? Anyone else experience this?

08-01-2008, 01:08 AM	#3
lkchris MBWorld Fanatic! Join Date: Sep 2005 Location: Albuquerque Posts: 2,818	Seems there was a thread recently with the same subject if not the same title. You could search. Ours did it from brand new and AFAIK it's normal. The solution is the latest V6 with particulate filters. __________________ Kent Christensen Albuquerque '07 GL320CDI, '06 E320CDI

09-25-2008, 10:01 AM	#12
DESAL Almost a Member! Join Date: Nov 2007 Location: Delray Beach, Fl Posts: 26	Tailgater vs CDI smoke Just read your idea about recycling of CDI smoke. I can wait to try it. Hope you didn't to wet with IKE.

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08-01-2008, 10:01 AM	#4
240D 3.0T Banned Join Date: Apr 2006 Location: Federal Heights, CO Posts: 507	The 05 model has a particulate filter so it shouldn't smoke. Are there any engine codes?

08-01-2008, 01:36 PM	#5
tuikku Member Join Date: Mar 2008 Posts: 86	. Very many reasons can cause smoke. Check the fault memory. If there is nothing, MAF sensor.

08-01-2008, 02:18 PM	#6
C5DRVR Almost a Member! Join Date: Jan 2007 Location: Houston, Texas Posts: 41	Mine also smokes if I nail the accelerator hard but only when I haven't accelerated hard recently. It seems that I get some buildup in the exhaust system and then when I nail it hard the particulate breaks loose. Afterwards, even on repeated hard acceleration I can't notice any smoke. All this makes me think I should just save up for that occasional tailgater and then let them have it.

08-01-2008, 08:56 PM	#8
Alan Smithee Senior Member Join Date: Jul 2004 Posts: 395	Mine does the same...big puff of smoke during heavy throttle tip-in if heavy throttle hasn't been used in a while (for instance, after the wifey has it for a few days). It has done this since new, but seems to do it more so now (20k miles).

09-25-2008, 07:17 PM	#13
Untertürkheim MBWorld Fanatic! Join Date: Mar 2007 Posts: 2,206	The E320 CDI models do have particulate filters, this is seperate from the Bluetec system, but DPF have been standard for a few years now.