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#1
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1985 300D white smoke LOTS!
This car start, and runs great. It has a perfect diesel sound to it. It just puffs out huge clouds of white unburned fuel. I checked the pump timing and it is dead on. I have not checked injectors, but I would think that if that was a problem I would be getting black smoke and probably some injector knocking. Could something be wrong internally with the IP? could the electronic rack be causing a problem? Valve adjustment and engine compression are good. Its not consuming water either, its white diesel smoke.
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Andrew Villasenor 805-720-5057 1984 300D turbo 5-speed manual(daily driver) ALL MY DIESELS RUNNING WVO Everything is for sale for the right amount Ebay Store |
#2
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Is there some restriction in the intake?
Phil Forrest
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1972 220D "Trudy," named by a friend. "The 220D sounds good... I suspect it is the only car that you need a calendar for, rather than a stopwatch, when doing acceleration tests." Tom Abrahamsson |
#3
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I guess its possible, but I feel like the car has full power.
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Andrew Villasenor 805-720-5057 1984 300D turbo 5-speed manual(daily driver) ALL MY DIESELS RUNNING WVO Everything is for sale for the right amount Ebay Store |
#4
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Air leak in to the fuel supply will also cause white smoke, sometimes loads of it. Could be as simple as a loose fitting or hose clamp. Id check everything, and id pull the supply line from the tank and draw vacuum on it with a mityvac and see if you are getting consistent fuel, or fuel with air bubbles
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This post brought to you by Carl's Jr. |
#5
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Are you sure it's unburned fuel? If it is, it should burn your eyes to the point you want to run away from it. It could be oil from a failed turbo seal.
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'83 300D, 126K miles. |
#6
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No electronic rack in an 85, just a electronic rack sensor for the EGR.
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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 |
#7
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Does it do it all the time? Do you have a video so we can see what it's doing?
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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 |
#8
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check your chain stretch
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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! |
#9
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dirty injectors => incomplete combustion => fuel in the exhaust. recommend you install rebuilt ones; get a hold of greazzer who has a sideline in this department....
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'77 240D, 504H, OM617.952, etc. |
#10
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I suspect it is turbo leaking oil. BTDT with a 81 300SD.
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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. |
#11
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Logically I would imagine it might be oil getting past the exhaust side of the turbo seal. Especially if it is not immediately present on a cold start up. As the exhaust system heats up in that scenario it vaporizes the oil better.
Running performance would not be affected either I suspect. Many mosokito killers work on that basic principal to fog oil. Or planes injecting oil into the exhaust system to skywrite use basically the same principal.. As others mentioned does it burn your eyes bad or not? If not it is oil. Smells sweet is coolant of course but I think you would have mentioned that in your first post as it is so noticeable. |
#12
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I swapped out injectors today and it did not make a difference. It is defiantly not smoking until it gets to full operating temperature. I know that it's not water vapor coming out the back. Not losing any coolant. I'm pretty sure it's fuel because it smells like diesel and it hurts my eyes, but I'm not 100% sure that it isn't oil. I tried having the smoke plow into a gallon zip lock bag so I could inspect the solid matter but the bag melted with the hot exhaust. I'll try something more solid tomorrow.
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Andrew Villasenor 805-720-5057 1984 300D turbo 5-speed manual(daily driver) ALL MY DIESELS RUNNING WVO Everything is for sale for the right amount Ebay Store |
#13
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Quote:
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Eric, CPO, Submarines, retired. Here's a sig line... Mine: '68 Corvette LS1/4L65E, 83 240D, 2000 GMC 4x4, 08 FLSTC Anniv Hers: '72 Corvette 454/4spd, '99 MB SLK, '93 Metro vert, 78 240D, '92 Silverado, '65 Fjord Rustang, '59 Fjord Fairlane, '17 Slingshot. |
#14
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Quote:
Phil Forrest
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1972 220D "Trudy," named by a friend. "The 220D sounds good... I suspect it is the only car that you need a calendar for, rather than a stopwatch, when doing acceleration tests." Tom Abrahamsson |
#15
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Check the modulator if it is leaking ATF into the engine by way of the vacuum line. This will definitely burn white smoke.
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http://farm8.staticflickr.com/7271/7...144c3fc1dc.jpg |
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