BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > fuel injectors...

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      08-14-2014, 05:42 PM   #1
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Drives: 2009 E92 335i 6MT
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fuel injectors...

car started running like crap again. Actually threw a code for the first time that I've ever seen after I gunned it coming out of a parking lot into heavy traffic, but it cleared itself... #4 misfire was all I could get. About 90K miles.

Ran a bottle of Techron through next fill up, then the next one I used Seafoam.

Car runs 100% better. Lesson learned. Good fuel is NOT enough, periodic fuel system cleaners are REQUIRED for this car. I always buy name brand fuel, usually Shell as that's the cheapest good station near me. Occasionally Sunoco (yes I know Sunoco is not top tier but I've never had an issue with it.) I'm on the second set of injectors too (replaced under warranty before I bought car) with #6 on its third.
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