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  #1  
Old 01-21-2013, 01:16 PM
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Question How smokey or otherwise is your diesel?

How smokey before you are embarrass to drive the car? All old diesel smokes a bit but how bad is bad? What is acceptable and what is not?

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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
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  #2  
Old 01-21-2013, 01:38 PM
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For Example: Bad!

This is what you'd call a bad example:

Mercedes 200D Start - YouTube

However, it has sat for 12 years prior to this, and is very badly adjusted / a little bit broken.

Also, my neighbours don't care. And if I could get it registered in it's current state, which is nearly impossible in Germany, or anywhere else I would drive it a bit, just for fun.
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  #3  
Old 01-21-2013, 01:41 PM
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Just had my daughter's 84 SD emission tested. 8% opacity at 60mph, 10% at 50mph, 6% at 40mph.
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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
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  #4  
Old 01-21-2013, 01:58 PM
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My 83 SD only has visible smoke at cold start and when floored. 195K mi. That's probably better than average though (I'm lucky there). I think some smoke on acceleration and startup is pretty normal for these.
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'07 E320 Bluetec 133K my DD
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'10 Hyundai Accent 60K Grocery Getter
'02 VW Golf soon to be on the road again
'97 E300 Diesel Son's DD
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Hampton Roads, VA USA

Gone but not forgotten:
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  #5  
Old 01-21-2013, 02:01 PM
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Quote:
Originally Posted by kerry View Post
Just had my daughter's 84 SD emission tested. 8% opacity at 60mph, 10% at 50mph, 6% at 40mph.
What does this mean? Car is moving or stationary on a dyno?

I suspect my car has low compression I think. Little blow by and oil cap does not dance. It is not black smoke but a slight white haze. It is not a smoke machine so to speak. I just want to get some opinions on what is considered normal or acceptable. All my working ( some are not ) diesels smoke, just a matter of how much.
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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
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  #6  
Old 01-21-2013, 02:05 PM
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On a dyno. It's the standard emissions test in CO. Put the vehicle on a dyno, drive at different speeds and shine a light thru the exhaust.
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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13
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  #7  
Old 01-21-2013, 02:16 PM
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Car had been sitting for over a year, with 311K miles on it: 190D exhaust - YouTube
Not bad I would assume. Needs all new fluids and filters, might have close to no smoke then
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  #8  
Old 01-21-2013, 02:39 PM
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Answer

Quote:
Originally Posted by ah-kay View Post
How smokey before you are embarrass to drive the car? All old diesel smokes a bit but how bad is bad? What is acceptable and what is not?
I am never embarrassed by diesel smoke
https://www.youtube.com/watch?v=slkQ7zSWMkI
https://www.youtube.com/watch?v=07a0SbeFmEg
https://www.youtube.com/watch?v=HW3C1AYQLnI
https://www.youtube.com/watch?v=HhxsN7HGo2Y&NR=1

or tire smoke
https://www.youtube.com/watch?v=xDtILVplrSk


This is terribly sad.
https://www.youtube.com/watch?v=ubWlNpokKTI


.
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Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
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1985 300SD
1983 300D
1984 190D
2003 Volvo V70
2002 Honda Civic

https://www.boldegoist.com/
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  #9  
Old 01-21-2013, 02:51 PM
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Quote:
Originally Posted by whunter View Post
I am never embarrassed by diesel smoke
https://www.youtube.com/watch?v=slkQ7zSWMkI
The smoking is similar, a bit less than this at idle. OK-ish, not embarrassed?
__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
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  #10  
Old 01-21-2013, 06:10 PM
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When I first got my euro 300d, I was reported for to much smoke. I got a nice letter from the state of California. When I got it, I remember it smoked so bad you couldn't even see the car when you floored it...Had a cop follow me for blocks attempting to figure out a way to pull me over....I liked the attention :-)
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  #11  
Old 01-21-2013, 09:30 PM
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My 83 300D T with 298k has no visible smoke from a cold start unless I shine a light on it. Such a sweet running and sounding engine- I love it! Oh I should mention, its last 80k was on veg too. If I floor it when on the road, I see a little black smoke in the rear view, which is normal.
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  #12  
Old 01-22-2013, 01:17 AM
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Quote:
Originally Posted by ah-kay View Post
All my working ( some are not ) diesels smoke, just a matter of how much.
I have noticed that all mine and my brothers cars smoke a little as well. The use of veg oil will cause a little more smoke than with pump Diesel.
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  #13  
Old 01-22-2013, 01:34 AM
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78 smokes a bit at over 200k
82 I had sit for 6 months started and no smoke at all. And somehow magicly had much reduced blow by! Guess a ring freed or something.
81 smoke son start but I know it has marginal injectors COmpression is good. Need to get the injectors rebuilt.
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  #14  
Old 01-22-2013, 11:22 AM
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Quote:
Originally Posted by ROLLGUY View Post
I have noticed that all mine and my brothers cars smoke a little as well. The use of veg oil will cause a little more smoke than with pump Diesel.
Hi Rich, I do not think Veggie or D#2 make a difference. I think the engine are all tired with many many K miles.
__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
Reply With Quote
  #15  
Old 01-22-2013, 02:37 PM
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Ok

Quote:
Originally Posted by ah-kay View Post
The smoking is similar, a bit less than this at idle. OK-ish, not embarrassed?
That sounds like low average smoke = you have a good engine.


***
Today; I sent away a young fellow that came by with a 1992 300D 2.5 turbo, worn out engine (smoking like this when warm)
https://www.youtube.com/watch?v=mP8KCp9PJjU
it had 800,000 (salt) miles (Chicago/Detroit).
The engine uses one quart of oil every 50 miles.
Cold start (three glows) with NEW glow plugs, cranking is roughly 35 seconds + the white smoke (unburnt fuel) covers two acres before it builds enough heat to fire.

He thought I could fix it with some miracle oil additive, under $100.00 USD.
The previous owner rebuilt the turbo, injectors, injection pump, new oil pump, good used crankshaft, new rod/main bearings, new cylinder head, new timing chain and tensioner.
I called the shop where the work was done, and they did recommend rings and sleeves, but owner declined "60,000 miles ago".

Current Compression numbers dry:
#1. 212 psi.
#2. 200 psi.
#3. 200 psi.
#4. 190 psi.
#5. 200 psi.


Current Compression numbers wet:
#1. 222 psi.
#2. 210 psi.
#3. 210 psi.
#4. 200 psi.
#5. 210 psi.


My diagnosis: Rings and sleeves are worn out, and must be replaced.
Doubtful the engine will be repaired due to cost.

.

__________________
ASE Master Mechanic
asemastermechanic@juno.com

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
1984 190D
2003 Volvo V70
2002 Honda Civic

https://www.boldegoist.com/
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