Tapping Noise

roadrunner

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Joined
Oct 31, 2004
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wiltshire
Hi, I have a 500 SEC 1985 & i'm getting a tapping noise from the engine on tickover. You tend not to hear it once the revs pick up but it is slightly there.
Anyone got any ideas?
 

Myros

Senior Member
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Aug 16, 2004
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in the great , grim 'oop north
Your Mercedes
R107, S211, R170, C219
does it come from one side or the other

in time with the engine revs, or in time with some belt- driven ancillary?
Welcome to 20 questions.
What's the mileage, have you had the chain tensioners done at all?
 

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