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Old 12-05-2012, 06:15 AM
snowsled7 snowsled7 is offline
The Ornery Old Man
Location: SW Mountains
 
Join Date: Mar 2012
Posts: 792
Mein Auto: 535i
As mentioned, the car needs some maintenance. Valve adjustment, filters and fluids. I would GO BACK to a plain old Bosch Super plug, that is what works best in this engine.

I would replace the O2 sensor, buy the $12 socket tool, makes it easy. Could be lots of other things. Wires, cap, rotor, fuel injectors, ICV....
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