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E63 / E64 6 Series (2003 - 2013)
The E63/E64 BMW 6 Series builds on BMW's sporty heritage with aggressive lines and an incredible motor to back the design up. Available in coupe and convertible trims with a standard 4.8 liter engine producing 360 horsepower and 360 lb-ft of torque, the 6-series is a popular choice that exceeds expectations.

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  #1  
Old 12-30-2012, 02:10 PM
vegas645 vegas645 is offline
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Location: las vegas
 
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Mein Auto: 2005 645ci convertible
Unknown leak

I noticed this when I did an inspection of the engine. The location is on the passenger side below the engine.

Any ideas? There are no warning lights.
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Old 12-30-2012, 02:13 PM
vegas645 vegas645 is offline
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Old 12-30-2012, 03:21 PM
HerbP HerbP is offline
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Mein Auto: 2005 645Ci & 2007 750Li
The picture is hard to make out, but it looks like a valve cover is leaking.
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Old 12-30-2012, 03:34 PM
vegas645 vegas645 is offline
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Mein Auto: 2005 645ci convertible
When I first start the car in the morning, it idles sporadic for about 5 mins. Then it is at the normal idle. If I don't let it run for 5 mins then when I drive on the freeway, it almost feels like it is going to cut off but there is a noticeable up and down drag on the accelleration. When I get home, it has a smell of burning oil.

Could it be a vacuum pump leak?

Estimated cost I should expect if it either of these problems?
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Old 12-30-2012, 05:28 PM
HerbP HerbP is offline
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There are 4 things that I think of that might leak on the passenger side. The valve cover or timing cover seal, the oil pressure sensor, the vacuum pump, or that the P/S reservoir is over filled. I would spray a can of engine gunk on the engine, then hose it down good. After this look at the engine every day, until you see where it is coming from. Looking at your pic, the valve cover gasket would be my 1st guess. The rubber seals at the bolts seem to leak, if they are not torqued properly.

Good Luck
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Old 12-31-2012, 06:54 AM
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645/333 645/333 is offline
Michael
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+1 on the engine clean as that looks like very old oil, and see from there????
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