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Old 11-02-2007, 09:08 AM
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Join Date: Jan 2006
Posts: 25
Information Needed

There is a 1987 Mercedes 300 Turbo diesel for sale,Wants $4500 for it has 125,000 miles the motor is a 6 cylindar 3 liter,car is in great shape.How are these cars in general how are the motors,the only issue is the Turbo dosen"t work so car is slow.

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Old 11-02-2007, 09:16 AM
Diesel Preferred
Join Date: Oct 2007
Location: Charleston SC
Posts: 2,712
Great cars, that engine has a couple of weaknesses but they are entirel managable and with care they last 500k miles or more.

Slow behavior is likely a fault in the fuel enrichment circuit; could simply be a pressure line plugged up with carbon, very simple 'no cost' fix. Very unlikely it is the turbo - they are very robust and usually last the life of the engine.
M. Dillon
'87 124.193 (300TD) "White Whale", ~392k miles, 3.5l IP fitted
'95 124.131 (E300) "Sapphire", 380k miles
'73 Balboa 20 "Sanctification"
Charleston SC
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Old 11-02-2007, 10:30 AM
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Join Date: Jun 2004
Location: West of Ft. Worth. TX
Posts: 4,168
Since you are unfamiliar with this car, I would find an independent garage (familiar with diesel MB's) to do a pre-purchase inspection. The reason being that this engine is susceptible to damage if ever overheated. It is well worth the money and may save you from major grief in the near future.

84 300SD 350K+ miles ( Blue Belle )
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Old 11-02-2007, 08:05 PM
babymog's Avatar
Loose Cannon - No Balls
Join Date: Jan 2006
Location: Northeast Indiana
Posts: 10,767
Search ALDA and Switchover Valve, likely one of these is your power limited problem.

Good coolant maintenance is key in diesels, in the aluminum-head Mercedes an overheat is likely to damage the head. Next in line are heating/AC problems and suspension bushings.

The miles are low (if accurate), if it is a complete & rust free car it is worth the money IMO. Leather is rare in the 300D, if the seat pleats run from the back all of the way to the front of the seat cushions it is MB-Tex, if they have a smooth panel across the front they are the much less common leather, heated leather is extremely rare.

For an average car with un-documented miles the price might be high.

My favorite Mercedes diesel is the '87 300D, lots of fun and comfortable.


Gone to the dark side

- Jeff
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