Before any cold start I always use my sump heater. On this start my oil temp was 74F and cylinders were 47F. Fortunately I had the cowling off for a post maintenance engine run. The engine had about 45 SMOH no work was done on the oil system. After the engine fired off the windshield had a large amount of oil splatters. I shutdown immediately. Looked over the engine found the oil filter gasket exstruded out, the filter was tight (15 ft-lbs). Talked to Lycoming, they said there was a blockage between the oil pump and the filter causing the pressure to exceed 200 psi.
Anyone have any thoughts where to look?
Anyone have any thoughts where to look?