What is your question?
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What is your question?
Sounds like a engine ticking noise goes with rev of engine wondering if it is known for timing chain/guide wear or replacement
What makes this problem better or worse?
Quiter when cold
How long has your 2004 BMW 645Ci had this problem?
Few weeks
1 Reply
Hello, not seeing any service bulletins related to an engine ticking noise. Perhaps a BMW experienced person may respond, but I think it's most likely that you should find a local BMW expert near you to have a listen to your engine concern to give you advice on your concern specifically.