Hi,

This sounds like a common problem for many of us (u are not alone ...) and this problem has been discussed many time here where you can find many threads...http://www.xoutpost.com/bmw-sav-foru...ke-bronco.html

I had the same symptoms on mine for a year (think that we have the same engine)...problem came more frequently during winter seasons with engine light flashing etc...

I had some leaks on my driveway, i have cleaned all the engine to see where this came from. Valve cover gasket..... both bank in my case my mechanics explain to me that oil were mixed into the plug creating kind of a ground at start.

I have changed the valve cover gasket and new bosh plugs...no more misfire so far. I'm just sharing my experience can be a lot of things...when i'm in the dark i go to the stealer and get there estimates and bring it to my INDY mechanics.

Welcome to the forum !

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2006 X5 4.4i premium, Sport package ,Winter Package, Sat Nav. AFE Power stage II Production : 08-2006
2012 BMW 128I Convertible Black
2011 Mercedes Benz B200 sold