--> RotaxEngines-List message posted by: "Remi Guerner" Hi all, My engine has developed an oil leak on cylinder 4 which has grown to the point where it must be fixed now. The leak is located at the junction between the cylinder barrel and the cylinder head. See attached picture. According to our Rotax distributor, the oil is coming from the crankcase, then it flows along the cylinder studs and escape between the barrel and the head. He does not know how to fix it. My crankcase P/N is 888364 and S/N 22031. The relevant drawing of this crankcase assy is page 5-2 of the May 2010 IPC. The drawing shows that there is no gasket nor o-ring to provide a positive seal between the studs of cylinder 4 and the crankcase. I have studied SI-912-019 R1 which talk about oil leakage in the cylinder area, but this SI affects crankcases from S/N 60010 only. The design of the crankcase has been changed extensively. Therefore this SI is not applicable to my crankcase version. My question: has anyone experienced this sort of oil leak on the old crankcase version (crankcase S/N below 27811) ? How to fix it? Regards Remi Guerner Europa F-PGKL Read this topic online here: http://forums.matronics.com/viewtopic.php?p=333515#333515 Attachments: http://forums.matronics.com//files/p3090011a_177.jpg _-============================================================ _-= - The RotaxEngines-List Email Forum - _-= Use the Matronics List Features Navigator to browse _-= the many List utilities such as List Un/Subscription, _-= Archive Search & Download, 7-Day Browse, Chat, FAQ, _-= Photoshare, and much much more: _-= _-= --> http://www.matronics.com/Navigator?RotaxEngines-List _-= _-============================================================ _-= - MATRONICS WEB FORUMS - _-= Same great content also available via the Web Forums! _-= _-= --> http://forums.matronics.com _-= _-============================================================ _-= - List Contribution Web Site - _-= Thank you for your generous support! _-= -Matt Dralle, List Admin. _-= --> http://www.matronics.com/contribution _-============================================================