2001 BMW 740i Q&A

2001 BMW 740i Question: taping sound in the engine

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 -
Answer 1
suggest letting a qualified BMW technician look/listen to this engine noise. tapping of any kind is not normal. -