Now that the nice weather is here, I was running with windows open (not warm enough in the Northeast for A/C yet), tried sunroof open, windows closed.....all open.There didn't seem to be a "combo" that wasn't letting in the diesel smell. (Oh, and with all windows/sun roof closed, there is zero smell)

Anyone have a "trick" or know of a combo that works better than others?

FWIW, when I had leaky injector return lines last summer, I initially thought it was an exhaust leak. We went up & down the whole system with a mechanics stethoscope listening for a leak.....and didn't find any, so I don't think it's that. Once the cracked injector return lines were replaced, all was well. This condition was real bad with all the windows up/sunroof closed.

I also double checked that the tail pipe exit was NOT (somewhat) impeded by the rear bumper (which might cause gases to perhaps find their way into the trunk area), so I don't believe that's the culprit either.

Anyone have any suggestions? Is there a setting on the ACC that gives the cabin (more) positive pressure and keep the fumes out?

Thanks in advance....

Any rust holes underneath? There is a grommet for the speedo cable, is it in correctly?

Tail pipes that exit straight out the back can sometimes get fumes into the car. Pipes that bend down at the back as they exit the bumper are less likely to be the cause of exhaust entering the car via a window or other aperture.

My (long gone) Golf diesel with a straight exhaust exit had exhaust coming in via the driver window while the other (long gone) Golf D with a downward tailpipe did not.

You could try an inexpensive exhaust tip to see if that makes a difference.

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Steve A
92 W140 OM603
97 VW Jetta TDI
90 Passat variant TDI 6 speed MT
94 Chevy K1500 6.5TD
05 E320 CDI
+ others

Drive FASTER !!!!

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daw_two
Germantown, TN

Links:
Sold last car --- 05/2012 1984 300D Light Ivory, Red interior
Cluster Needles Paint
New Old Stock (NOS) parts

Past:
3/2008 1986 300SDL "Coda"
04/2010 1965 190D(c) "Ben"
& many more

It's an old Diesel. It's gonna have a smell to the exhaust. If it is really bad, maybe your engine is not burning the fuel efficiently. I am currently investigating this possibility with my car. The exhaust smells fuel-rich and I get white smoke at idle.

I have not found a way to keep the exhaust from entering the cabin with the windows down. It is not really an issue for me since I rarely smell it. If you sit in traffic a lot, I can see it being a problem. In that case, roll up the windows until you are moving at a steady pace.

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1991 F250 super-cab 7.3 IDI. (rebuilt by me) Banks Sidewinder turbo, hydroboost brakes, new IP and injectors.
2003 S430 - 107K
1983 300SD - Tanoshii - mostly restored ~400K+.
1983 300SD - Good interior. Engine finally tamed ~250K.
Monark Nozzle Install Video - http://tinyurl.com/ptd2tge

two characters

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Brian
87 300Dturbo 180K #14 head still running R-12 SOLD 12/2017
02 F350 Powerstroke 180K
05 Chevy Express 1 ton w/Royal Utility box 120K
08 Infiniti FX-35 40K
15 Golf Sportwagen TDI 35K
10 Sprinter 3500 chassis with a Class A Winnebago on it. 56K

Pretty much. I would 100x over smell an old Diesel than some DEF hopped up stink box! That DEF crap burns my nose and lungs and I'm a smoker for crap sake!

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1991 F250 super-cab 7.3 IDI. (rebuilt by me) Banks Sidewinder turbo, hydroboost brakes, new IP and injectors.
2003 S430 - 107K
1983 300SD - Tanoshii - mostly restored ~400K+.
1983 300SD - Good interior. Engine finally tamed ~250K.
Monark Nozzle Install Video - http://tinyurl.com/ptd2tge

not a joke..if you can run some biodiesel the smell is much more pleasant. B20 and above you cant smell the petro.

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1981 NA 300D 310k miles

Check for an exhaust leak again. Except at a stop you shouldn't be getting any exhaust smell inside the car.

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Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 400,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 22,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.

x2 on an exhaust leak, just because it was sound a year ago is no proof its sound now.

Also, if the exhaust ends in front of the edge of the bumper it will swirl around and get in the cabin.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

Thanks guys. Southern car I brought up w/o any rot holes underneath. This is at 30-40 MPH. I kinda eyeballed the turn down exhaust and the rear bumper doesn't seem to be in the path of exiting exhaust????

I can try some biodiesel, as I love donuts.....

I've never had this issue with a straight or curved exhaust execept when I had a leak up front, I suspect there's a leak in your system somewhere.

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-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

Incomplete combustion of fuel, either by wrong set timing or low engine compression or both; you will ultimately find to be your problem causing the excessive diesel fuel smell inside of your car. When timing of fuel injection to engine compression is properly set, there is miniscule diesel smell, period.

Benzdiesel

grab the exhaust downpipe where it exits the turbo... inspect the flex connector... I'm betting it's cracked. look for signs of carbon

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

Everything I own are OLD Diesels, I never get smoke in the cabin area. windows up or down. X 2+ on a leak some where in your exhaust system.

Charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works