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#1
10-02-2000, 10:06 PM
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I've searched through the forum, but I haven't seen this question addressed. Specifically, when is the recommended time to check these parts for replacement? I have a 94E420 with 65,000 miles, oil changed every 3000 miles. No noise yet. And what about the tensioner?
------------------ Bob Johnston 94 E420 
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#2
10-03-2000, 04:57 AM
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The Dealer in Austin told me 120-140k miles
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#3
10-03-2000, 02:30 PM
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The only engine that had a timing chain inspection requirement was the 1984-87 M102 in the 190E 2.3. Most chains will last 100-150k mi. If the tensioner fails the life of the chain can be cut in half. If you hear a rattle w/starting then have the tensioner checked(replaced).
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