---------------------------------------------------------- RV8-List Digest Archive --- Total Messages Posted Sun 01/22/06: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:14 PM - Oil Leak (DCS317@aol.com) 2. 07:14 PM - Re: Oil Leak (jolly dawson) ________________________________ Message 1 _____________________________________ Time: 04:14:42 PM PST US From: DCS317@aol.com Subject: RV8-List: Oil Leak CC: DCS317@aol.com --> RV8-List message posted by: DCS317@aol.com I've got an small oil leak on the back side of my Lycoming. I thought it was leaking around the lower stud of the left magneto (a drip forms on that stud). Two removals and reinsertion of the stud (each with thread cleaning and thread sealer coating) and then a third removal (with an oversized stud inserted) did not cure the small leak. I think the leak is probably above the magneto perhaps at the connection of one of those expensive oil hoses at the back of the case. Just running the engine for a few minutes will not cause the leak--I have to cowl it up and fly the bird to see any oil leak, i.e., high power settings for at least 20 minutes--which messes up my belly and diffusely the left back of the engine. I've tightened all connections to the oil cooler (located on the right side of the engine) and cannot pinpoint any area of leakage. This is small enough to not notice any significant reduction in crankcase oil level even after a few flights. Anyone got any ideas how to pinpoint this frustrating leak? Don Schmiesing Seattle 110 hours on RV-8 417DS ________________________________ Message 2 _____________________________________ Time: 07:14:16 PM PST US From: "jolly dawson" Subject: Re: RV8-List: Oil Leak --> RV8-List message posted by: "jolly dawson" here is a tip that works for me on a LOT of stubborn leaks on ALL sorts of engines..clean the engine, and dry it off..put a coating of talk powder over the suspected aerea of the engine..if no joy after you run the engine, try putting talk ALL OVER the engine..sometimes the air stream carries the oil to the back of the engine, when the leak is really in the front...good luck, and blue skys to you...jolly in dallas, ore. ----- Original Message ----- From: Cc: Sent: Sunday, January 22, 2006 4:13 PM Subject: RV8-List: Oil Leak > --> RV8-List message posted by: DCS317@aol.com > > > I've got an small oil leak on the back side of my Lycoming. I thought it > was leaking around the lower stud of the left magneto (a drip forms on that > stud). Two removals and reinsertion of the stud (each with thread cleaning and > thread sealer coating) and then a third removal (with an oversized stud > inserted) did not cure the small leak. I think the leak is probably above the > magneto perhaps at the connection of one of those expensive oil hoses at the back > of the case. Just running the engine for a few minutes will not cause the > leak--I have to cowl it up and fly the bird to see any oil leak, i.e., high > power settings for at least 20 minutes--which messes up my belly and diffusely > the left back of the engine. I've tightened all connections to the oil > cooler (located on the right side of the engine) and cannot pinpoint any area of > leakage. This is small enough to not notice any significant reduction in > crankcase oil level even after a few flights. Anyone got any ideas how to > pinpoint this frustrating leak? > > Don Schmiesing > Seattle > 110 hours on RV-8 417DS > >