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#1
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1999 300D Large cloud of white smoke
I was driving my 1999 300d today cruising along at about 50MPH when I heard what sounded like a bang or loud pop and there was a cloud of white smoke behind me. Now the car has almost no power and jerks and blows white smoke when it is jerking during acceleration but no smoke when running down the road. It no longer feels like there is any turbo boost. The turbo spins freely and the engine runs smooth at idle.
Top speed is about 60 MPH. There is no check engine light like there was when the cat converter plugged. I got a code that said the waste gate was bad but it was a plugged converter instead. It almost seems like the exhaust is plugged because the engine seems to be laboring just to rev up. There is no longer a cat converter on this car so that can't be it. |
#2
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Some semi-random ideas:
Timing chain jumped a tooth? Fuel system issue? Blown head gasket? What does the smoke smell like, and how are your coolant and oil levels and conditions? Other internal engine problem? Have you had any more unusual noises after that initial bang or pop? Also, what's the patient history? Miles? Any maintenance done recently or know to have been deferred by more than a little? Incidents/mishaps? Ever vegged?
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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. |
#3
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White smoke in a marine diesel is water in the fuel. i would start by examining the fuel filter. Then search for signs of a head gasket issue
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#4
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My experience with white smoke on a 617 is oil in turbo. It was like a smoke machine. Changed out the turbo and everything is fine.
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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. |
#5
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The problem was the pipe that goes up to the intake manifold from the intercooler came loose. I don't understand how that was causing white smoke but it did.
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#6
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oh, cool, not only are the 99 606's turbo but they are INTERCOOLED? wow.
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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! |
#7
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My Jetta TDI did this -- scared the hell out of me! Glad it was such a minor issue; that sinking feeling is the worst...
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1992 300D 2.5T 1980 Euro 300D (sadly, sold) 1998 Jetta TDI, 132K "Rudy" 1974 Triumph TR6 1999 Saab 9-5 wagon (wife's) |
#8
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Leak in compressed air delivery = no boost. Reconnect IC tube, and you're back in business. If the silicone coupler is stretched, it may need to be replaced after cleaning the IC inlet/outlet of excess oil. This used to be a big problem on Ford 6.0 SuperStrokers.
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Thanks, Mark in NC "Spark plugs?...We don't need no stinking spark plugs!" 1985 300SD "Der Silberne Schlitten" 420,000 mi Wish these were diesel: 2003 Ford Club Wagon 130,000 mi |
#9
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Interesting. We had an intercooler hose blow off an LMTV once. No smoke was noted, but the electronic engine controls on that are considerably more advanced than even a '99 Benz. I would have expected any smoke to be black.
__________________
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. |
#10
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wierd. i had the rubber i/c hose had a huge hole ripped in it and it ran fine and no smoke ...noticed it one day when changing the oil.
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1993 e300 1995 e320 1994 e320 2006 s500 4matic 2004 Jeep wj overland 2001 Ducati 748 2004 Honda shadow aero |
#11
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perhaps the puff of white smoke was oil buildup from the intercooler via the turbo.
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Thanks, Mark in NC "Spark plugs?...We don't need no stinking spark plugs!" 1985 300SD "Der Silberne Schlitten" 420,000 mi Wish these were diesel: 2003 Ford Club Wagon 130,000 mi |
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