Quote:
Originally Posted by DrModiford
My 300E has just rolled past 164,000 miles but I did wonder whether the timing chain tensioner might be worn down as that would be cheaper then a chain to replace, particularly since a chain will have to be purchased from the dealership (but then a part that critical I wouldn't trust a pattern part equivalent).
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Replacing the timing chain tensioner is cheap insurance, and is one of the first things they tell you to replace outright. Not sure what the mileage expectancy of the chain is, but if it is not making any noises yet its probably still fine.