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  #1  
Old 09-24-2010, 10:25 PM
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Massive smoke, Is it dead?

On the drive home the car made a small clunck and became very underpowered. After checking temp and oil pressure (both were fine) I decided the best course of action was to get the car home.

The car is running relatively normal though underpowered, she is putting out a massive smoke cloud whenever running and there is literally oil dripping from the tailpipe. No oil in water system. My initial though is headgasket, but why the clunk? and why is the oil unburnt out the tailpipe? Next idea is the turbo but there again it seems unlikely. Wouldn't the engine have sucked in the remains of the turbo? why would the rebuilt turbo I got from phil inside of a year be gone already?

Not surprisingly I need my car, I'll be working as fast as possible to diagnose the problem and get it back on the road. Can anyone think of a possibility beyond headgasket of turbo?

Any help or ideas is, as always, greatly appreciated.

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  #2  
Old 09-24-2010, 11:16 PM
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Location: Ocala, FL
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While at 400k+ miles, it certainly does not owe you anything!

We need more info:

New or old style vacuum pump?

Has head ever been off?

What are operating temps at?

If you have a way to check boost, what are you getting? ("T" in from the line coming from intake manifold)
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  #3  
Old 09-24-2010, 11:24 PM
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As far as I know, new vac pump (smooth front no bolts)

Head has never been off

Running at normal temp
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  #4  
Old 09-24-2010, 11:31 PM
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It's the other way around. The new pump has bolts on the outside.
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1993 190E 2.3 - 105,000
1981 300D - 250,000
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  #5  
Old 09-24-2010, 11:51 PM
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Underpowered and oil may mean turbo or busted rings/piston. Whatever it is, it cannot be good. Sorry to hear that happened to you. I would do a compression test. If a cylinder is significantly low, do a leak down test. If you had to pull the exhaust manifold, a look at the exhaust ports would tell you which cylinder(s) was/were passing oil. Just a few thoughts.
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  #6  
Old 09-24-2010, 11:55 PM
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I'm sorry, I'm a little flustered with the possible death of my car.
The vac pump HAS BOLTS (I just checked to be sure I was right)
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  #7  
Old 09-25-2010, 12:01 AM
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Something happened to the turbo.
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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
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  #8  
Old 09-25-2010, 12:05 AM
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Quote:
Originally Posted by kerry View Post
Something happened to the turbo.
Yup

If you're lucky, it blew a seal on the turbo.
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  #9  
Old 09-25-2010, 12:10 AM
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It should not be too hard to see if it is the Turbo ornot.
Some thoughts:
First remove the Air Inlet from the Turbo.
Observe what it looks like inside, do you see any broken Fins on the Wheel; is the Shaft Nut still there and tight.

Reach in and spin the Turbo Compressor Wheel and see if you can feel it bind.

Next push the Wheel towards the rear of the Car and rotate it with a slight pressure and see if you feel any binding or dragging.

Move the shaft back and forth side ways. When you do that it shold not make contact with any of the Housings.

Do the same but pull it forward as you slowly spin it.

Push it in and out and see if there is a lot of end Play. When you do this it should not "thunk" when you pull it in and out.

Finally you know that Oil was coming out of the Exhaust Pipe so you know there is going to be Oil in the Turbine Housing of the Turbocharger. But, what will tell you where the Oil came from is if you remove the Turbocharger.
If the Exhaust manifold is dry you know the Oil did not come from the Engine and it has to be a problem with the Turbo.

If the Exhaust Manifold is wet I would suspect something like the Member who had a Valve Guide break. I guess it would have to be an Exhaust Valve Guide.
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  #10  
Old 09-25-2010, 12:33 AM
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Hmm

Quote:
Originally Posted by djustin973 View Post
On the drive home the car made a small clunck and became very underpowered. After checking temp and oil pressure (both were fine) I decided the best course of action was to get the car home.

The car is running relatively normal though underpowered, she is putting out a massive smoke cloud whenever running and there is literally oil dripping from the tailpipe. No oil in water system. My initial though is headgasket, but why the clunk? and why is the oil unburnt out the tailpipe? Next idea is the turbo but there again it seems unlikely. Wouldn't the engine have sucked in the remains of the turbo? why would the rebuilt turbo I got from phil inside of a year be gone already?

Not surprisingly I need my car, I'll be working as fast as possible to diagnose the problem and get it back on the road. Can anyone think of a possibility beyond headgasket of turbo?

Any help or ideas is, as always, greatly appreciated.
talk to Brian.

175 MPG in an SDL
http://www.peachparts.com/shopforum/diesel-discussion/138131-175-mpg-sdl-turbo-seal-failure.html#post1022899
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  #11  
Old 09-25-2010, 01:24 AM
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So, just got the intake off and (drumroll please) THE TURBO IS COMPLETELY SEIZED! While normally this would be terrible news, today it's the best thing that I could hear. My headgasket is not the issue and assuming no fine print the turbo should still be under warranty since I got it from Phil less then a year ago!
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  #12  
Old 09-25-2010, 09:38 AM
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So, I'm certain the turbo is shot. However, I have my concerns that something caused the turbo failure. Is there any way a valve guide or something else in the head could have broken off and made it to the turbo without destroying the engine in the process?

I started the car this morning to listen to how it ran, it sounds normal at idle but revving a little causes it to sound rough. Is my problem more extensive then the turbo? Is the rough run simply a result of the seized turbo?
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  #13  
Old 09-25-2010, 10:04 AM
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Possible, but highly unlikely. Airflow to the engine and exhaust flow out of the engine are going to be severely limited by a seized turbo so I wouldn't judge the condition of the engine with the seized turbo still attached.
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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
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  #14  
Old 09-25-2010, 10:21 AM
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If there is oil from the exhaust manifold to the turbo, you have an issue in the engine. If no, and there is massive oil in the turbo, your exhaust guides are not the problem/source.

It is unusual to have a catastrophic failure of the turbo, what was the failure mode of the first one? Were you accelerating hard when this one failed or just rolling along?
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  #15  
Old 09-25-2010, 10:26 AM
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I wouldn't really say the first one "failed" it was just old and had more slop then I was comfortable with in the bushings. It had been consuming oil for quite a long time and I finally decided it was time to replace it.

I had my suspicions that the engine's air flow would be severely cut with a non-op turbo.

I'll be removing the turbo and the upper portion of the exhaust manifold tonight. I'm hoping not to find oil before the turbo.

This failure occurred on very hard acceleration. I had just begun to climb a mile long steep hill from a stop when the engine became very underpowered and started billowing smoke.

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