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Q: misfire and power loss tried injector cleaner now i hear a little rattling from on 2005 BMW 645Ci

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
engine what should i do next
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See if you can get the codes pulled from the DME (engine control module). Power loss (especially at higher RPMs), misfiring and rattling sound could be a sign of catalytic converter failure.
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