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#1
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200D finally starts, but smokes alot
Hello forum,
I've got a 200D here that has sat for 12 years. Now it finally started to deliver fuel to the injectors, but when it finally starts, it quickly dies again, after a few revolutions. I have video of it, and i would appreciate any help and ideas of what could be wrong. Trying to start a Mercedes W115 200D after 12 years. Failed - YouTube Thanks in advance, and greetings from germany, Moe Oh and I forgot to mention: -Diesel pre and main filter are new, -oil is new -Clear diesel lines replaced, hence no visible air in the diesel system -I freed the IP up with some rust easer, because it was stuck What i haven't done yet: -Adjusted the valves (they were all more or less in spec, so I will adjust them once I get/make the special wrenches). But i think if this would be the problem, it woudn't even start a little, right? -Adjusted the injection timing. Does the same apply as with valve clearance above? Last edited by Mojoan; 09-29-2012 at 11:35 AM. |
#2
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Are the glow plugs working? I would not have released the starter as soon as you did. I would have helped it run with the starter for a number of seconds to get it running well before disengaging the starter. It behaves exactly like a diesel trying to start at 25 degrees below zero which makes me suspect bad glowplugs. I'd also consider giving it a separate fuel supply in a gallon jug to rule out any fuel delivery problems from the tank.
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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 |
#3
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Fuel delivery is fine, I have propably pumped over a liter of diesel with the handpump, no problem.
Hmmmm glowplugs... Is it normal for the coils between them to become hot? Edit: right now the battery is charging, so later i will try to engage the starter a little bit longer, to see if that helps. Would be awesome if that made it run Also thanks for your quick answer Last edited by Mojoan; 09-29-2012 at 07:41 AM. |
#4
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Yes, if the squiggly wires between the plugs get hot, they are energized. I suppose it is possible for the wires to get hot and the plugs not work if the insulators were not in the right places, but that's not likely.
Engine was turning a little slow with the starter in my opinion but I thought the battery might be low.
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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 |
#5
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Well then only time will tell. I will update this thread when I know more.
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#6
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IT'S ALIVE!!!! Video to follow |
#7
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1975 Mercedes /8 First start in 12 years! - YouTube
and here is a second video of the smoke that comes out of the exhaust: Mercedes 200D Start - YouTube Next thing I'll do is adjust the valves, but first I have to bend some wrenches... |
#8
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It could be an issue with the Pneumatic Governor Diaphragm or a leak in the system.
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84 300D, 82 Volvo 244Gl Diesel |
#9
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Thanks for the tip. I'll check that tomorrow.
Another thing i remembered: the idle seems to go up-down-up-down, by about 100 rpm every 2 or so seconds |
#10
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Mojoan-
Glad you got it started. Perhaps everything is fine at this point, but I heard one noise in your videos which I wanted to mention. It is a high pitched whoosh of air, that sounds like a dummer tapping on a snare drum (or maybe high hat). I got that noise on my car when I overtightened a glow plug, which broke it. This caused a leak of air to occur after each ignition in that cylinder. My car was able to start with this condition, but would not run well. So I might be imagining the noise in your videos, but I wanted to mention it. Oh, and by the way, I challenge you to a drag race!
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1968 220D, w115, /8, OM615, Automatic transmission. My 1987 300TD wagon was sold and my 2003 W210 E320 wagon was totaled (sheds tear). |
#11
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Thanks!
I accept the challenge but only if the amount of smoke you produce gives points too because you have an unfair advantage with those 10 extra horses Oh and i never touched the glowplugs, they are fine... Just a thought: Could the diaphragm get dried out from 12 years of sitting? |
#12
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This car does not have the rapid heat glow plugs that are used today. You have to hold the knob on the dash in the first position until the indicator glows red inside- this indicates the GP's are up to temperature. This could take as long as a minute.
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#13
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Quote:
Fluctuating idle RPM can be caused by sloppy throttle shaft at the intake butterfly, or sloppy shaft in the rear housing of the injection pump. Both need to have very minimal to no up and down play- some axial play is OK. Replacing those with good tight ones makes all the difference in these old Diesels.
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1968 230S Automatic, Elfenbein 1975 O309D Executive Westfalia Camper Bus, Blau/ Weiss 1972 280SEL 4,5 Dunkelrot 1966 VW Type 34 "Grosser" Karmann-Ghia 1963 VW 1500 Variant Pearlweiss 1969 VW Variant Automatic, Perugruen 1971 VW Squareback Automatic, Clementine Orange 2001 E320 4Matic Wagon- Our belated welcome to the 21st century! Polar White 1973 280SEL 4,5 Sliding Roof "The Bomb", Dunkelblau. |
#14
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Black smoke is unburnt fuel. I'm betting your compression is low from sitting so long so you're getting incomplete combustion. I think after driving it a while the smoke might go away. Or, your air filter may be dirty.
__________________
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 |
#15
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After 12 years, all the soot in the exhaust system will come loose and blow out. That could be what you're seeing. If it continues, it's something else.
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