Fordiesel69 272 #1 Posted 2 hours ago Got a 518xi that is puffing compression out the oil fill cap. It also puffs the dipstick out also. And it burns oil unloaded, not when engine is load and working which is wierd. Any ideas. I'm not good with the Xi series yet. Share this post Link to post Share on other sites
Wild Bill 633 941 #2 Posted 1 hour ago (edited) Check compression. Possible head gasket failure. Edited 1 hour ago by Wild Bill 633 Share this post Link to post Share on other sites