M3AN 4166 Report post Posted 14 hours ago BNIB/NLA BMW Performance Spoiler + Maxton Design Spoiler Cap for sale (tomorrow)... 1 Quote Share this post Link to post Share on other sites
Brianr70 94 Report post Posted 2 hours ago On 7/29/2025 at 4:05 PM, Driftit said: Likely. Is your 07 an LCI? The PCV is built into the cam cover. One of the dumbest decisions BMW has ever made on an engine IMO. When the PCV fails or begins to fail it can pressurize the crankcase and you will start to smell oil. Leave it long enough and you will start getting leaks. Are you sure you don't have a small leak that is dripping a small amount onto your exhaust? Thanks, production date was 5th March 2007 so guess it is LCI, is replacing the PCV value a major job? Quote Share this post Link to post Share on other sites
Jacko 2302 Report post Posted 1 hour ago 3 minutes ago, Brianr70 said: Thanks, production date was 5th March 2007 so guess it is LCI, is replacing the PCV value a major job? You can replace the whole rocker cover, or there are chinese aftermarket replacements for the diaphragm and housing for cheap (amazon/aliexpress etc), which are a bit hacky to do but do work. You could do it in situ but it would likely not be too fun, need to break the original diaphragm housing off using chisels etc. Quote Share this post Link to post Share on other sites
