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  #1  
Old 07-12-2009, 03:20 PM
BMW Cruisin BMW Cruisin is offline
 
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Mein Auto:
E39 523i billowing white smoke

Hi

When warm my 5 series starts knocking, the power drops and the road is obscured by white smoke billowing from the tailpipe. If I drive on, the knocking stops, the smoke stops and it drives normally. Then a mile or 2 later it starts again. I have checked the oil level and it has fell. The coolant looks quite brown with white suds.

She has just turned 160,000 miles. I would appreciate any ideas - what's wrong with her, is it an expensive fix, etc.

Cheers
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  #2  
Old 07-12-2009, 04:27 PM
BMW_GAL BMW_GAL is offline
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Mein Auto: 2009 335i Coupe
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  #3  
Old 07-12-2009, 04:34 PM
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sakura sakura is offline
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Mein Auto: HOT
Hi there and welcome to the community. Check out the 5 series forums and you can search or post there for more response. Best wishes!
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  #4  
Old 07-12-2009, 04:46 PM
Ryan M Ryan M is offline
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Quote:
Originally Posted by BMW Cruisin View Post
Hi

When warm my 5 series starts knocking, the power drops and the road is obscured by white smoke billowing from the tailpipe. If I drive on, the knocking stops, the smoke stops and it drives normally. Then a mile or 2 later it starts again. I have checked the oil level and it has fell. The coolant looks quite brown with white suds.

She has just turned 160,000 miles. I would appreciate any ideas - what's wrong with her, is it an expensive fix, etc.

Cheers
You have a blown head gasket. The white smoke, knocking, power loss, and milkshake looking coolant are all textbook signs.
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Old 07-13-2009, 09:59 PM
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Solidjake Solidjake is offline
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Mein Auto: 13 328i 6MT
Hello and welcome. Please check the section that pertains to your BMW model and post your question there. Please remember to use the search function located in the upper right hand corner.

+1 on the gasket.
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