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#1
04-02-2009, 03:08 PM
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white smoke on start up 1985 300D
Hi all have a new problem with my 1985 300D a whiteish smoke on start up its doesn't smell like antifreeze not sweet at all. Smells really like unburnt diesel but its white. There is a lot for the first minute and then runs fine. I checked the antifreeze and its fine and the motor oil looks good and the coolant level stays very constant. So I don't think its a blown headgasket. I am leaning towards bad valve stem seals the car seems to lose oil and I can't find any leaks. Any ideas would be helpful. THanks and how worried should I be? I am very broke right now. So any ideas on an easy fix would be great.
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#2
04-02-2009, 03:15 PM
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is it totally white, or more of a gray color? most likely, it's the result of unburned fuel exiting the motor... look into injectors.
__________________
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!
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#3
04-02-2009, 03:21 PM
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clogged injectors probally... How does your coolant look? Is it free of contaminants? Does the level look low? If not that would probally rule out a head gasket failure.
__________________
". . .back before accountants designed cars"  -Current Stable- '78 MB 450SL-C 107.024.12.020783 #3840 <Kayleen> '85 FORD F250 6.9L Diesel <Allison> '98 Lexus ES300 <Rachel> Long Gone... '74 Chevy G10...........................'99 GMC Yukon 4X4 '83 Chevy Suburban 6.2 diesel .....'99 SAAB 9-5 '90 Mitsubishi Eclipse GS............. '01 Chevy Tahoe '98 Nissan Altima .......................'02 MB ML320 '88 Chevy Suburban V2500 4X4 6.2 diesel
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#5
04-02-2009, 04:25 PM
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How are your glow plugs? White smoke on startup is unburnt diesel most likely.
__________________
83 300TD, 260,000 miles, aka "Dusty" 6 vehicles, 2 cup holders (both in the dump truck)
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#6
04-03-2009, 06:53 AM
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No its white and its smells like diesel. The coolant is fine I have been keeping a close eye on it for a while now. And right now the car doesn't seem to be leaking any oil. So okay injectors it is thanks guys was getting worried
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#7
04-03-2009, 08:20 AM
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Confirm that your glowplugs are working first, then suspect injectors. That way you replace things in order of cost.
__________________
1985 300 TD 448K 1984 300 TD 278K 1983 240D euro 240k 1994 f-250 idi turbo 330K 1986 f-350 IDI 1987 F-350 IDI 1985 JD 1050 4wd 1965 IH 3660
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#8
04-03-2009, 08:22 AM
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No glowplugs work fine had a 10 round fight with them a few weeks ago. Will contact bgkast for some rebuilt injectors in a few weeks until then I just don't drive it.
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#9
04-03-2009, 11:00 AM
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It is possible to have one bad glow plug and not have the glow plug light act up. Even though you have recently changed all of the glow plugs, check them anyway, they are easier and less expensive to change than injectors.
__________________
 "Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970
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