Quote:
Originally Posted by JNoSol
I can't think of anything else, other than fouled spark plugs, clogged injectors, old air filters. BMW recommend that you replaceme the spark plugs every 60k miles. Turbo cars air/fuel mixture isn't perfect all the time, so 60k miles might be optimistic.
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Could a bad O2 sensor cause the spark plugs, injectors or air filters to get dirty?