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Old 12-07-2012, 12:17 PM
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QSilver7 QSilver7 is offline
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Location: Northeast Indiana
Join Date: Aug 2008
Posts: 9,053
Mein Auto: 1997 740iL / 2006 X5 4.4
Leaking valve gaskets can cause an accumulation of oil to build up in the spark plug wells...thus "drowning" the plugs in small pools of oil...which can cause "bad running" and "stalling".

Have you checked your spark plug wells?

Below is an example of a spark plug well with oil that is NOT supposed to be there versus one that is clean:

Q {BMW CCA Member #191509}
2006 E53 X5 4.4i (Sterling Gray) 12/05 mfg date <<~>> 97 740iL (Arctic Silver) 3/97 mfg date
99 540iT (Orient Blue) <<~>> 95 525IT (Alpine White)
91 735iL (Schwarz Black) <<~>> 85 325e (Bronzit)

Last edited by QSilver7; 12-07-2012 at 12:25 PM.
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