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      05-16-2012, 06:51 PM   #9
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Drives: 2008 335xi 6spd Coupe
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This is well documented on these forums. You need new plugs, and if that doesn't fix it, your injectors are likely toast. Depending on the year of your car, there is a TSB for replacing the old injectors out with a newer version at the dealer's cost under warranty.