Head Gasket Service Bulletin – 1989 Porsche 911 Carrera 4 Coupe
Head Gasket Service Bulletin – 1989 Porsche 911 Carrera 4 Coupe
Part of content: When repairing oil leaks from the cylinder to cylinder head sealing area on engines prior to the above engine numbers, all cylinders and pistons should be replaced and all cylinder head sealing surfaces refaced. Cylinder [...]