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BMW 3-Series (E90 E92) Forum
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N47 rough cold start with black smoke
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08-26-2023, 04:45 AM | #1 |
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N47 rough cold start with black smoke
2010 model BMW 320d E90 N47 engine 250 000 km (155 000 mi)
For the past couple of months I've noticed a distinct rough cold start on our car with a plume of black smoke. This only lasts for a few seconds (or less than a minute), then it smooths out. Also note:
Now I know something is off, but I am not sure how to go about it. I certainly don't want to go on a parts replacement spree. The black smoke on start up is fuel right? If it is indeed an injector leaking, or injectors leaking, can you diagnose it with a code reader? |
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