Group, After I got the ECI Titan cylinders put on, I noticed a new oil leak. After a flight I notice the inside top and left of the front cowling is wet with oil. The is the area below the cylinder head air intake hole. It seems the oil may be coming from somewhere at the front of the engine, then blown only to the left side of the front cowling.
The small cover plate at the front of the engine, directly behind the prop, which I think is the accessory port for a vacuum pump, is also wet, but only at the back. You have to insert your hand and blindly feel for this. There is no oil dripping or collecting at the four studs holding this plate on. We have retightened these four nuts once to be sure the gasket is making a good seal and used Parker Stat-0-Seal and Thread Seals (commonly referred to as washer seals or self sealing washers) to eliminate a leak path around these four studs. The Stat-O-Seals and Thread Seals were not used initially, only a white silicone type of sealant from a tube which was "smuched" on during assembly. The Stat-O-Seals and Thread seals helped quite bit and I thought the problem was solved, but it just took longer to show itself. A new seal was put on the prop shaft where it exits the engine case when the new cylinders were installed. Any ideas where the oil may be coming from? Should we still suspect the gasket on the accessory plate or is there another common place for an oil leak up front? Thanks, Darick
