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International Automotive Technicians Network
Re: Rough idle with oil cap removed
Posted to Technical Discussion Forum on 2/3/2010

I agree with everyone else, if it is a MAF system, the "extra" air will cause the engine to run lean. My '99 BMW runs horrible if the oil cap is taken off while idling, plus it makes one heck of a mess, ask me how I know :) !!!

Mike Login to read more.