Quote:
Originally Posted by E61Silver
I did a monthly trip to Maryland, 500 miles round trip, at well over the speed limit. I also do most of my mileage on the Highway so I don't think that is the issue.
I also don't think it is a fluke if you read other BMW boards they talk about the problem. The fact that it is a turbo seems to be a big factor. The fuel injection system was a big problem and BMW change my fuel pump twice and injectors, I also recently had a problem with the value timing. The problems with the fuel injection system were so bad that BMW had a formal recall and extend the coverage on that system to 100,000 miles.
The car at 50,000 now runs better than new and shows no signs of age/wear, I have CPO coverage for another 4 years and love the car but it has required lots of repair.
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Not sure. I really haven't read of too many carbon issues in modern BMW engines. Not nearly as many as Audi.
Also, cruising on the highway at lower RPM is not the same a revving the engine out, which helps clear out carbon. Speed doesn't matter. High RPM's do.