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Rattle noise on sta...
 
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Rattle noise on start up in a 20014 E350 4Matic

  

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Topic starter

Scotty, I spent over 1 hour on YouTube.. you videos are GREAT, you make all the sense to me and you obviously know what you are doing. Well to the  point:

I love my car, is smooth as silk. H

However I've recently noticed a rattling sound on start up, it goes away within a few seconds. I thought it was because I leave the AC on when I turn it off, so I tried turning it off.  I've tried topping off the OIL. I suspected it was the "ECO" mode  I simply cant figure it out.

It is totally random.

There are a ton of ridiculous answers on the internet and they all seem to go off on a tangent.

In your expert opinion what do you think I should be looking at? 

 

BocaBierta {black}:cool:  


3 Answers
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You probably need a new timing chain kit installed.


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If you're lucky it's just the tensioner for the timing chain. I wouldn't think the chain or guides would be worn out on an 8-year-old vehicle but I suppose it's possible especially if oil was not changed regularly.


Nobody is that lucky, Chuck. (joke)


@d oc, My oldest vehicle with overhead cams is 36 years old with about 300,000 miles and the timing chain is still silent. Ditto for my 25-year-old daily driver with over 360,000 miles. Maybe I'm spoiled but that that's the kind of durability I'm accustomed to. (By my standards an 8-year-old car is still practically new!)


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Hey @chucktobias - my 41 year old Toyota 22R engine has it's original, double row timing chain (225,000 miles) and it too is silent.  I guess you and I must live right.


The kinds of problems people report having here with relatively late-model cars are pretty appalling.


No lie.


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