M mad4slalom Senior member Aug 25, 2013 #1 any one here fitted a new constant pressure valve on an M ? apparently the O ring degrades and causes an oil leak. thought i saw a vid of one being fitted without stripping exhaust manifold, any ideas, thanks
any one here fitted a new constant pressure valve on an M ? apparently the O ring degrades and causes an oil leak. thought i saw a vid of one being fitted without stripping exhaust manifold, any ideas, thanks