taping sound in the engine on 2001 BMW 740i

there is a taping sound in the engine,this is just a week now, i had my oil change and is still taping, what must be the problem? car have 145k miles please help me

by in Parlin, NJ on April 10, 2011
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1 answer
ANSWER by , April 11, 2011
suggest letting a qualified BMW technician look/listen to this engine noise. tapping of any kind is not normal.