Quote:
Originally Posted by J02 335i
Its a dealer money grab in my opinion, I have yet to see a plugged or partially plugged fuel injector in my 10+ years of being a licensed tech.
More then likely you have a bad injector that leaks slightly when the car is off and causes the rough idle on a cold start, or an ignition coil on its way out.
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Pretty much this. My wife got suckered into doing this on her Mini Cooper S when it was in for recall service, even though it only had 36K miles. Unfortunately she didn't call me before telling them to go ahead, otherwise I would have checked into it, and used an indy mechanic we love and trust if it sounded like something that was actually necessary. Anyway, the general wisdom is that gas is clean enough these days that injector cleaning isn't a maintenance item; it should only be done if have symptoms that indicate they might be dirty. Sounds like the dealership at least has some symptoms to justify their recommendation, but I'd check what the previous poster mentioned first.