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#1
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Help! My 73 220D is running rough w/ white smoke
Last time I went to take my 220D for a ride, I noticed a very rough idle and white smoke from the tailpipe.
The smoke is not coolant smelling. Also, while driving, I can feel a noticeable miss. The engine shakes at idle. The engine mounts are new. I've narrowed it down to the #3 and #4 cylinders by cracking each fuel line loose at the injector while the engine is idling. The #3 and #4 makes little to no change in engine idle. Things I've Checked
Any ideas? Thanks in advance! |
#2
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Could be a torn vacuum pump diaphragm or the diaphragm in the governor on the back of the injection pump. Both these can cause oil burning resulting in smoke...governor can result in ruff running and increased fuel output...
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#3
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Could just be poor quality fuel
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1992 W201 190E 1.8 171,000 km - Daily driver 1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone 1965 Land Rover Series 2a Station Wagon CIS recovery therapy! 1961 Volvo PV544 Bare metal rat rod-ish thing I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior Don't leave that there - I'll take it to bits! |
#4
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Quote:
The vacuum is pulling suction and the lines are bone dry. I used a small hand pump with gauge to test the gov on the back side of the IP. It held pressure. The IP looks pretty new, I believe it was replaced by the previous owner. |
#5
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Good point. I am using Jet-A with a lubrication additive. I know the Jet-A is good quality. It's basically like a kerosene...
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#6
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this
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i'm guessing jet A is too thin & getting where it doesn't belong.
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1991 300D |
#7
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I'll fill it up with some regular diesel and see what happens. I run Jet A in my truck (F250) and I know quite a few people who run it in their vehicles but maybe the OM615 doesn't like it. Thanks for the help! |
#8
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Even if it is super-duper top of the line diesel if it has too much water in it then...
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1992 W201 190E 1.8 171,000 km - Daily driver 1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone 1965 Land Rover Series 2a Station Wagon CIS recovery therapy! 1961 Volvo PV544 Bare metal rat rod-ish thing I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior Don't leave that there - I'll take it to bits! |
#9
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On the return hose from the IP back to the fuel filter canister, I do find tiny air bubbles (like champagne) when the engine is running. I believe it is a return hose since it flows back to the fuel filter.
Do you think this is normal? Thanks Never mind the #3 and #4 fuel lines disconnected. |
#10
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Is is normal? Well I think I have to be careful with this one! It does happen quite a lot - but it isn't meant to be like that (some people think "because they are all like that" it is meant to be like that)...
...check for leaks and re-bleed your system. Those over flow pipes from the injectors look non standard - might be a good place to start.
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1992 W201 190E 1.8 171,000 km - Daily driver 1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone 1965 Land Rover Series 2a Station Wagon CIS recovery therapy! 1961 Volvo PV544 Bare metal rat rod-ish thing I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior Don't leave that there - I'll take it to bits! |
#11
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Quote:
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#12
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I would get something like one of those 2 Liter Gas Cans and some extra Fuel Hose and try runing it from the Can filled with Diesel Fuel. Just for testing.
You als might run a long hose from the Fuel Return to a similar container and see if you are getting Air Bubbles out of it. As you were saying an Air leak can cause the symptoms as it will mess with the Injector Spray pattern and make tne Injection Time later.
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84 300D, 82 Volvo 244Gl Diesel |
#13
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Quote:
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84 300D, 82 Volvo 244Gl Diesel |
#14
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ok,
rechecked compression 1. 250 psi 2. 260 3. 290 4. 300 I also checked timing chain stretch to be 10 degrees. So I assume this isn't helping my problem. I will probably go ahead and order a new chain. I also ran across this thread White smoke...Uh ohhhh | Mercedes-Benz Club of America It's pretty much what mine is doing. I'm wondering if the #1 #2 cylinder head gasket could be compromised allowing oil to enter. |
#15
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compression was checked on a cold engine
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