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Old 04-11-2000, 03:44 PM
Posts: n/a
Hi guys,
I own a 420 SEC (W 126) form 9-1989 (120000 km); some time ago I noticed a ticking noise at the right side of the right cylinder block,with the engine idling (tapping valves??).

The normal idling speed is irregular (like stumbling/misfiring)and it seems to me the fuel consumption has slightly increased lately....

The MB dealer supposes a malfunction of the valve tappets and/or rockers which need to be replaced, maybe the camshaft as well...!?

Has anyone experienced the same problem ? If so, please let me know what the diagnosis was....

Thanks in advance,

Rémy K.

[This message has been edited by cremer (edited 04-11-2000).]
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