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  1. Need help to identify engine noise!

    E39 5 series Forum
    Hey, like my title says, my engine make a really loud "tikk tikk tikk" sound. My car have a M52TUB28 and runs Castrol Edge Sport 0W-40! Is it the rod bearing? Or Piston rings (I think it called "Piston slap"?)? Is it the timing on the engine (chain jumped once)? Thanks for all the answer!
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