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Old 10-12-2010, 09:21 AM
HPIA4v2 HPIA4v2 is offline
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Originally Posted by Keith2000328i View Post
Same here. My 2008 535i has this clanging sound on initial acceleration at low speed. The car runs like a dream, but that sound is a little embarassing!

Maybe I also need to have BMW to check the waste gate?
Be careful with any clank noise at acceleration, it's rather general and may indicate other problems.
For the known wastegate rattle issue, rev the engine to 3-4k RPM then on engine deceleration you'll hear the rock-in-tin-can rattle sound with hood open and windows down.

You may have problem with exhaust butterfly which is more normal, but so is control arm bushing, trans or diff so get the dealer check it while it's still under waranty.
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