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7 Series - E65 / E66 (2002 - 2008)
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  #1  
Old 06-12-2008, 12:00 AM
alcazark alcazark is offline
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Location: Northridge, CA
 
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Mein Auto: 2002 BMW 745i
Vacuum Pump Assembly ???

Anyone knows what a Vacuum pump assembly is...I got my 02 745i in for service for an oil leak , which they thought was just the valve cover gasket. Got a message today from my SA that the vacuum pump assembly is broke and that's where the leak is coming from..He said that the vacuum assembly has something to do with the timing chain..

Can anyone clarify this for me...

Thanks...
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  #2  
Old 06-12-2008, 12:03 AM
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sunny_j sunny_j is offline
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i have no idea about your question but i assume your out of warranty?
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Old 06-12-2008, 12:25 AM
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Playdrive4me Playdrive4me is offline
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From Wikipedia article on Valvetronic:

It is important to note however, that the throttle plate is not removed, but rather defaults to a fully open position once the engine is running. The throttle will partially close when the engine is first started, to create the initial vacuum needed for certain engine functions, such as emissions control. Once the engine reaches operating speed, a vacuum pump run off the passenger side exhaust camshaft (on the N62 V8, exhaust cam on the N52/K) provides a vacuum source, much as a diesel engine would, and the throttle plate once again goes to the fully open position.

http://en.wikipedia.org/wiki/Valvetronic

Here is the part...
http://www.realoem.com/bmw/showparts...78&hg=11&fg=45
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Old 06-12-2008, 08:41 AM
alcazark alcazark is offline
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Thanks for the response...
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  #5  
Old 06-12-2008, 12:31 PM
alcazark alcazark is offline
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Anyone knows if this is an easy fix ..
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