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Old 09-21-2003, 04:50 PM
Registered User
Join Date: Sep 1999
Location: USA
Posts: 338
380SL Timing Chain Noise Question?

I have a 1985 380SL with 105K miles on it. The timing chain tensioner was replaced at 75K miles and the timing chain and tensioner (again) was replaced at 80K miles.

Now there is a noise that sounds like a loose timing chain sometimes, but not all the time, on a cold startup. I never hear the noise on warm startups. What should I be looking for to cure this? Is it easy to inspect the timing chain rails for damage?

Thank you.

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Old 09-22-2003, 03:24 PM
Registered User
Join Date: Sep 1999
Location: USA
Posts: 338
From what I read here the 1985 380SL has a double chain, that being the case is the chain noise I'm hearing of concern?

Thank you.
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Old 09-22-2003, 04:42 PM
Heriberto Rosas's Avatar
1983 500SL, Puerto Rico
Join Date: Jul 2001
Location: Puerto Rico
Posts: 65
I own a 1983 Euro 500SL and have the same problem. They changed the chain and tensioner two months ago and keeps doing the same thing. Now the tec says he is going to change the oil pump because maybe its not pumping enough oil at startup. What i am going to do before that is put a thinner oil, maybe 30 or 40.

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