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  #1  
Old 08-15-2010, 04:10 PM
Registered User
 
Join Date: Feb 2001
Location: Northumberland, UK
Posts: 1,294
320 TE (w124) smoking under load

My 1993 320 TE (M104) smokes when run at high speed for prolonged periods. If I run for more than about 10 minutes at 90 mph or more, it pours a white/pale grey smoke from the exhaust. If I back off, it dies away.

The car has 179,000 miles. It is not using water. It does not seem to be using oil, or at least not much, certainly it has needed none over the last 1,500 miles. The head gasket was done about 20,000miles ago (for the second time) and there are no leaks. It does not smoke in the morning. It is fed a variety of good quality petrols, never the same station, rarely cheap supermarket stuff.

The car does vibrate about 80mph, not in the steering but from the drive line. The wheels have been balanced and balanced again so I suspect it is the propshaft and unrelated to the smoke.

I would be very grateful for any help at all. I am at a complete loss.

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JJ Rodger
2013 G350 Bluetec
1999 SL 500
1993 E300 diesel T
1990 190
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  #2  
Old 08-16-2010, 10:10 AM
david s poole
 
Join Date: Mar 2005
Location: dallas
Posts: 1,822
check the vacuum line from the modulator on the trans to the intake and see if there is trans fluid in it.also check your trans fluid level.if that is the problem and you keep driving you may damage the trans.
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David S Poole
European Performance
Dallas, TX
4696880422

"Fortune favors the prepared mind"
1987 Mercedes Benz 420SEL
1988 Mercedes Benz 300TE (With new evaporator)
2000 Mercedes Benz C280
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  #3  
Old 08-16-2010, 01:17 PM
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Join Date: Aug 2002
Location: Southeastern PA
Posts: 3,077
JJ Rodger, inspect the front and rear flex couplings for cracks/tears. At that mileage it's quite possible one, or both, need replacing.

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