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7 Series - E65 / E66 (2002 - 2008)
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  #1  
Old 01-07-2013, 04:15 PM
bkc0508 bkc0508 is offline
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Location: South Carolina
 
Join Date: Sep 2012
Posts: 127
Mein Auto: 2006 750LI / 2012 2500HD
Suction on dipstick on idle is this normal?

2005 750 when idle I have suction on the dipstick is this normal.
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  #2  
Old 01-07-2013, 06:02 PM
Davidf Davidf is offline
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Location: Austin, TX
 
Join Date: Dec 2012
Posts: 91
Mein Auto: various BMW's
Yes. Crankcase is under vacuum at all times. Engine should have stumbled when you pulled dipstick with engine running. Basically, pulling dipstick creates a huge vacuum leak and result lean condition.
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Old 01-07-2013, 06:09 PM
bkc0508 bkc0508 is offline
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Location: South Carolina
 
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Posts: 127
Mein Auto: 2006 750LI / 2012 2500HD
Thanks I am trying to find a oil usage problem. Not wanting to do valve seals. I can't find any leaks
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Old 01-08-2013, 09:49 AM
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ECSTuning ECSTuning is offline
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Location: Wadsworth, Ohio
 
Join Date: Feb 2009
Posts: 3,981
Mein Auto: Hover Car on Wheels
Sometimes oil will leak onto the under panels of the car and make finding a leak a bit difficult. Try removing those covers on the underside of the motor to help give you access to the full bottom of the motor.
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