Same exact thing with an OM642, which also has the EGR cooler that gets all gunked up. Because the government thinks that’s a good idea or something.

No way to make smoke on a 642, the electronically controlled injectors have too tight a control on the fuel to allow it to smoke.

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The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech

I used this stuff ( Chocolate ) when I was racing a car painted UPS brown.

Also look at candle scent as this is likely the origin. And remember, the exhaust fumes are still there, they just smell different.

I find the smell has all but disappeared since the mandate for ULSD. Maybe you fuel supplier is cheating and filling his tanks with heating oil or off road diesel. The only other thing that might cause this is burning engine oil-are you adding any between changes?
Don’t monkey with advancing timing, that’s not going to fix this and may cause other problems.

Warning ALL Diesel Owners, Random poor quality fuel

I still get a bad tank occasionally.

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617 swapped Toyota Pickup, 22-24 MPG, 50k miles on swap

Now if megasquirt would make a injector controller kit with high enough voltages to manage the injectors and a replacement pump that would replace the factory injector pump..... Common rail on an old Mercedes. Thats what dreams are made of. Maybe use cummins injectors with some sort of an adaptor.

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Satan creates nothing: he only ruins everything. He does not invent: he tampers. And his followers are no different ~ Archbishop Carlo Maria Viganò

There is always this...
Bad Diesel - a fragrance

__________________
The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech

Whenever I had turpentine to my WVO to help clean the system out the exhaust smells like pine trees plus french fries.. kind of a unique smell but glorious nonetheless.

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84 190D 5spd - 878K
87 300TD VIN 0007 - 298K
93 FUSO FE-HD 15' - 198K
05 158" Sprinter 2500 - 270K

"Ich mag die Dieselgeräusche"
https://youtu.be/YjrxHqNy5CQ
✞

You could always go to your local testing station for emissions test, this will reveal some content against intended readings.

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David


1996 Mercedes S124 E300TD - 129k - rolling restoration project -

1998 Mercedes W210 300TD - 118k (assimilated into above vehicle)

I use B99 biodiesel whenever I can and the exhaust smells like hot wok oil or fries, which is pleasant. Sadly, the nearest station to me is nearly an hour away and open 6AM-4PM Monday through Friday, so I only get the opportunity when I'm downtown and it just happens to be during this window of time. In the meantime, I have to use diesel, which doesn't smell as pleasant, and my car isn't as fast as with the biodiesel. I really wish there were more biodiesel stations around, especially along major highways.

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Stop paying for animal enslavement, cruelty, and slaughter. Save your health and the planet. Go vegan! I did 18 years ago. https://challenge22.com/

DON'T MESS WITH MY MERCEDES!


1967 W110 Universal Wagon, Euro, Turbo Diesel, Tail Fins, 4 Speed Manual Column Shift, A/C
1980 W116 300SD Turbo Diesel, DB479 Walnut Brown, Sunroof, Highly Optioned, 350,000+ Miles

Summer months I use rapeseed oil which is the main ingredient in Euro bio diesel, it benefits from high viscosity and similar calorific value to conventional diesel, doesn't smell too bad either.



OP, another thought is you may have an old batch of winterised diesel, perhaps try a different brand/filling stn.

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David


1996 Mercedes S124 E300TD - 129k - rolling restoration project -

1998 Mercedes W210 300TD - 118k (assimilated into above vehicle)

I'd look to see if that station sells / used to sell kerosene, putting winters left overs in the diesel tank would be an easy way to clear the stations kero tank.

Also look to see if they sell race gas in the summer, might be same pump as the kero in winter.

Electric vehicles don't smell at all, and have only 18 moving parts. They are also about 4 times as efficient as fossil vehicles. If you get the electricity from solar panels, you aren't burning the fossil fuels somewhere else for other people to smell.


Of course you might piss off T.Rump and the Koch Brothers.

I'd think that moving all present non automotive electrical needs to solar would be impractical ( what do you do at night ? Batteries are $$$ and lossy when charging / discharging. )

Moving all fossil fueled systems to solar would require even more panels / surface area / storage.

Please provide calculations as to solar surface area required for present electrical loads. Also calculate all fossil loads to be replaced by solar. ( Heating / lawn mowing / construction equipment plus more. )

I remember someone noticing a better smelling exhaust after dumping a bottle of Miracle Mystery Oil in their tank. I think they used it to clean the fuel delivery system.

MMO has a somewhat pleasant odor.

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84 300SD
85 380SE
83 528e
95 318ic