Re: BMW 318 IS Coupe 1998 year 1896cc Very lumpy idle and O2 sensor .2v Archived Message
Posted by Pete Mutlow on July 25, 2008, 8:08 pm, in reply to "BMW 318 IS Coupe 1998 year 1896cc Very lumpy idle and O2 sensor .2v"
Hi Pete. Found on some of these older cars they have a plastic restrictor pipe stuffed in the breather pipe which with age disintegrates and allows more air into manifold creating the symptons of an air leak. I usually try to make a restrictor pipe as a quick fix but a trip to main dealers is proper answer. regards Pete
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