1
Omega General Help / Oil leak from top of engine on 2.2 doc Omega
« on: 07 September 2018, 11:21:15 »
I've joined the forum as I have a problem with my father-in-law's 2.2 Omega: The usual oil leak from the top, rear (passenger side) of the engine. Yesterday I changed the cam cover gasket (Copy, not Vaux original as he had already bought one) which was obviously faulty as all sparking plug ports were FULL of oil once I removed the HT pack (1/4 of a cup of oil syphoned off!). Cleaned everything up and ran silicon gasket seal along seal area as well (belt and braces), new screw "O" rings and didn't over tighten the bolts. Removed oil breather pipe to block and applied silicon to gasket before re-fitting. On start up noticed a small drip from behind lower exhaust manifold bolt dripping onto block by the oil breather pipe. Using a mirror, a small amount of oil appeared to be coming from either the head gasket (Unusual) or the housing which the EGR valve bolts to, then running down the head to the exhaust bolt. I thought this might be old oil so cleaned area then started up again. Ran engine for 30 mins with no leaks and whilst doing so, used a mirror to check rear of head and confirmed no oil from cam cover or head nor any running down head towards ex' manifold. Turned off, let it cool down, then re-ran until fan cut in, again no leaks. Left over night and again no leak. Father-in-law collected car this morning and drove home (8 miles), just 'phoned to say oil leak in same place!!! I doubt the head gasket would blow just to release oil (the engine runs smoothly on all four cylinders) and wouldn't suspect the EGR valve "manifold" would contain oil so am somewhat confused. Anyone any ideas of common faults? Thanks in advance...