400 sel engine problem - Mercedes-Benz Forum

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post #1 of 3 (permalink) Old 03-09-2008, 12:32 PM Thread Starter
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Unhappy 400 sel engine problem

I have a 93 400sel that has 147000 miles and a good service record.Last Monday i was climbing a hill to my house and she began to loose power.When i stopped to open the gates the car cut out and would not start.just clicking sound.I called a friend of mine and we initially thought it was the starter motor.He manually turned the engine then placed a strong battery into the boot and it turned over but would not start,there was a knocking sound from the engine on the right side.
the car did not overheat while i had it and there was plenty of oil in the engine.i was told that the chain probably jumped the cog and that the engine is badly damaged.Someone else told me that the same thing happened to him with his Merc and he simply changed the rails,chain and tensioners and it was sorted.
Could anyone throw some light as to what has happened and the best way forward.
I do not want to scrap the car.
I figure I have come to the best website for advice.
Any help would be greatly appreciated.
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post #2 of 3 (permalink) Old 03-09-2008, 01:00 PM
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It's a plausible explanation but it's not necessarily badly damaged from jumping a tooth or two. But you need to get the valve covers off to have a look. You should also read the fault codes on the 38 pin connector. If the timing chain has jumped you probably also have a broken chain guide or two, and have will chain guide debris in the oil pan.
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post #3 of 3 (permalink) Old 03-09-2008, 01:48 PM
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Yes, either start tearing it down to have a look, or have the car towed to someone who can do it for you. There is no other way to effect a diagnosis.

"If spending money you don't have is the height of stupidity, borrowing money to give it away is the height of insanity." -- anon
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